So. Bioware. Take a good long look at Witcher 3. That's the kind of quality you want in DA4. The storytelling, the script, the set-building. This is stuff you need to look long and hard at. Because while I love DA: I, Witcher 3 was a couple steps above in the quality of the game(also, all the free DLC was a nice boon).
That being said, here's some things I'll point out that I think the next game needs.
* Either make a new character or continue with the Inquisitor and make his left arm being his special 'thing', whatever that 'thing' may be. Even if it's as something as cheesy as Ashe's mechanical arm from Army of Darkness.
* If not a new character or the Inquisitor, bring back the Warden. I want to know what has become of the Warden. What he's doing, what his goals are since he obviously has an agenda of his/her own.
* I loved DA:I's combat. And while I thought that DA:O's combat was too boring for my taste(I'm just not that into tactical combat #sorrynotsorry), the options for tactics in DA:I was lacking. For all of the complaint that DA2 was too button-mashy, it did give a lot of options for tactics, which I liked. I liked being able to program my companions tactics while still being able to beat away at an enemy. Which is why I think if DA:I had the combat it already had, while having the tactical options of DA:O or DA2, it would've been worlds better. But again, not options for those of us that just want to kill things.
* Make Solas the villain. I know that this seems like a forgone conclusion considering Trespasser, but this needs to be a thing. Former companion turned bad guy(even if it's more anti-hero than anything else)? I've been waiting for that in a Bioware game in years.
* Get your **** with the Dwarves sorted out. Considering Descent, there's a lot of 'wtf' going on and things were possibly not as well thought out at first. The intention is interesting, but this is slowly turning into a 'too many cooks in the kitchen' sort of situation. It's going to have to tie up sooner or later, or you're going to suffer the Christ Carter Effect(go watch the last two seasons of X-Files and you'll understand what I mean).
* Bring back Sandal. I still maintain that he's the Maker in a human guise.
* Bring it all together. Since I'm fresh off Trespasser, right now, I don't know if there should be a DA5. I feel like DA4 should wrap up this entire storyline, and it really does feel like it's building towards...well, /something/. I feel like every single plot thread that's been left lingering in the last three games should be all tied up and everyone(and I do mean /everyone/, covering companions and major players from the last three games)get their proper ending(based on whatever decisions you've made).
* Please don't start catering to fan service shipping. You've avoided this so far in DA, while ME was sorta cringy in it. I'm glad DA:I was not the relationship simulator that ME sorta was(and I say even though I like ME over DA).
* Keep the gold glitch in. Seriously, this has started to become a staple of DA games. There's always been something that's kinda been regarded as a gold dupe or gold glitch. I think it's a trend that Bioware should keep going. Almost like it's an inside joke at this point.
* Get rid of resource mining. I have wasted far too much time scouring for resources(especially after the resource dupe was fixed). It's not fun, it's grinding, it's time-consuming, and it's just a way to extend the game's length more than what it needs to be. Now, I do like crafting, but just let us buy straight out or simply gain the resource itself allowing us to make whatever once we've earned, either via level progress, story progress, quest reward, or gold purchase. But don't make us look around for those three pieces of silverite I need to make a damn sword. Or, if you want, just go back to DA:O's material quality. THe more you level up, you find better quality items. That worked well, for me anyways.
* Let us be a dick. No, really, in past DA games you could be just the biggest jerk in the world. You could drive companions away, hell, you could even kill them if you felt you needed to. None of that in DA:I. If that means some kind of Paragon/Renegade scale, whatever. Or Friend/Rival.
* Not so many filler quests. Seriously, how many quests were there in the Hinterlands, alone? A lot, far too many to count, and eventually, I just stopped caring, because they really didn't mean ****. Or if you're going to do, and I'm going to point to Witcher 3 here again, give it's own story. Make it relevant. Many, or a lot of the quests there, a lot of them felt like they were important. Hell, many of them could make you /care/ about actually doing it, instead of just looking at it like just another box to check off.
* Let us kill Anders if you let him live in DA2. I may be the sadistic type, but I'd want Anders to see exactly what he did, the results of his actions before I killed him(that's sorta why I let him live). Or magically tore Justice from him and /then/ killed him. Either/or, I'm not picky.
* Skyhold. Keep it., but maybe give a bit more in customization options.
That's all I can think of off the top of my head, I'm sure there's more if I sat down and thought about it.
First of all if you look back at the Alpha it looks like the Witcher took from Dragon Age of they would have keep going many people would have probably said the witcher copied off Dragon Age Inquisition.
They can't really give away free stuff. The witches gave away contracts small stories we don't really have that in Dragon Age in terms of DLC it has usually been small expansions.
* 1 one big reason everyone forgets about bringing back old protagonist is that if you didn't play the old game you have no real connection to the protagonist like you should. That's the main reason I believe they won't bring back previous protagonist as the main PC
* DA:I's combat Wat better the best I think of the three. But would have preferred the first auto attacks they had for the mage in the alpha the awesome hand auto attack that allowed them to move OMG plz for DA4.
As for tactics it was very lack luster. I don't really understand it at all. They has the perfect tactics menu from DA2 yet did not implement it in DA:I
* I'm sure it's not the last of Solas for sure obviously don't know of he'll a boss or anything but Eh
* yes dwarfs are in a weird place lol. A lot of mystery now surrounds them I'm sure we'll get answers soon enough.
* sandal has to come.back once he believe we are ready to see his maker form lol. I'm very mad we didn't see him and Bodan at the palace like wtf
* I don't think there's anything wrong with having to get your own materials. Just don't make us search for them for tons of stupid fetch quest. And you can buy just about all the materials straight out.
*I do agree with giving side quest more relevance a d even having some bigger aide quest like the witcher 3 with quest such as the Bloody Baron one. Quest that have a new entire story that really grab you and immerse you into the world.
* lol I would like to see Anders again it would be nice and interesting.
As for DA4 being the last game um no. There's way to.much to for into one game. The rest of the Magisters. The Maker. The elves. The dwarfs now. The rest of the old gods we have more blights coming. Flemeth. Solas. The Qunari. Tevinter. Yea no all of that isnt fitting into one game an I would hate it if they tried.