See, this is what I don't get.
On the one hand, people say the game is less complex, with less abilities/spells to use, less customisation, basically less things to do in combat.
On the other hand, the same people also bemoan that you can't use the Tactics screen to basically have your party completely manage itself. Which one is it?
I replayed Origins recently, on Nightmare. It was easier than DA:I on Hard with FF on, thanks to all the potion hoarding and easy to use healing spells. Outside of a select few fights with mass CC or heavy damage, Origins is a cakewalk, even moreso if you use crafting or min-max.
Inquisition on Nightmare requires planning (for me at least), and timing when it comes to using combos or barriers. Given that the more squishy party members die in seconds, positioning them well is also pretty important. I agree that Inquisition has less options (I found most of them superfluous but that's neither here nor there). I don't agree that it requires less tactics, and the far more interesting itemization makes up for a good part of the lost customization to me.
Hell, in terms of customization, we lost crossbows (well, semi lost, hello Varric), duel-wield on warriors, and weapons other than staves on Mages as well as some abilities (which might have been needed, Mages in Origins had lots of redundant spells, and all classes gained lots of interesting passives). The latter is really annoying, if sorta made up by Knight-Enchanter. Apart from that, we still have armor customization (more than before), we have a much better crafting system, and one look at the Combat & Strategy forum shows the game still has lots of possible builds.
It is both.
Before tactics was removed I could use it for the spells that were in the game, which would include the ones that are not in the present system. Its not about less things to do in combat, its about the choice to do what I want in combat, the way I want, when I want. Tactics allows me to bring that same level of micro management to the other characters as well.
If I want to play it top-down one person at a time, then I can pause it and do so. However if I do not want to play it top-down and I just want to let the moment take me then my companions can use the tactics I have created and I get to feel more like a field general who has taught his people well rather than a baby sitter. That choice has been taken from me and replaced with a very clunky system that forces me to take shortcuts. That is their new way of imposing strategy, forcing you to take shortcuts and or removing options.
There are not more options of builds in this game than there were in Origins, you can't even pretend that is true. There are more options in Origins for Mages than there are for every class in DAI put together.
More armor customization is incorrect as well. If you talk about armor customization from the view point of the older games then we must include what they took away and forced into Abilities and armor, that being attributes and any other armor in the game. So aesthetically you lose..well everything, your armor in DAI comes from about three basic variations and that's it. In DAO you could wear anything you wanted if you had the stats for it, you just had to suffer whatever penalty was associated with that as well, ie fatigue. Stats came statically with armor plus you could put runes on armor by awakenings..which by this time was just too much power bloat but I digress, it still gave you a few options.
So locked down aesthetics vs slightly more variation of stats but with the complete lack of personal stat distribution in the first place....If it's an edge to DAI, its hairline thin. Now aesthetics like locking into a color to use leather or metal armor as a mage might not bother you, but trust me the lack of choice compounded with everything else that has been stripped down begins to wear on people.
As for the crafting system, there wasn't one in Origins. You found everything, but discovery is kind of nice as well, Where as in DAI all the unique weapons absolutely suck at end game. So I would call this a draw to be honest, especially since the best schematics have to be farmed from one dungeon with a meta-gaming effect like an MMO unless you are ridiculously fortunate.
As for DAI being difficult, I played it on Nightmare with FF. Only once in full, with a DW rogue, started with a KE didnt get past Haven because I got bored. Of the game, not the spec. YMMV as they say, but I found this game easier. There are three passives that increase the rate at which you are able to use spells. Pretty easy to spec all three and have an almost perma-barrier up the entire time. Now I could play a different way and challenge myself, but frankly the game isn't interesting enough for me to bother. If I wanted a hard game, I'd go back to Eve Online or original Dark or Demon's Souls at NG+. This game is not meant to be difficult, if it is then they really really failed at that as well.
So the destination or product of your character customization efforts in DAI and DAO is often times similar, but the journey and choice which in RPG's is everything, is completely different. You may like the new journey, but many of us don't.