Er....DAI has more potential RP options than other BW games.
First you have added races and backgrounds with just enough ambiguity to be able to define your character. Throughout the game you are questioned about your origins and views, unlike previous games which were restricted to 10 minutes of prologue and the rare opinion.
Then you have enough content to be able to pick and choose how you want to play your character and develop the Inquisition.
In DAo, I had to avoid a lot of the side quests to RP my character, DAI is no different. There are proportionally more ways to RP in either direction.
DAI has more divergence than previous games ( mutually exclusive pathways in many cases), and all of them having a direct effect on the story as opposed to being relegated to an army you'll never use in DAO and an epilogue slide.
War table missions allow you to RP your Inquisition and contain text-based quests with rewards as well as lore and content.
Then you have mutually exclusive specializations with more meaning and impact, adding to the uniqueness of each playthrough.
Not to mention the increased number of romances and alternate companion quest lines with significant effects ( comparable to hardening in DAO ). Relationships are much more natural this time around and develop as a result of your actions and favors. Alienating a character has a divergent path much like rivalry, but much more believable.
i fail to see the lack of RP. perhaps you need to adjust your attitude towards what present.
So far I've played three archetypes
1- Order Restoring Noble
2- Mage Freedom Circle Mage
3- Zealous Andrastian Templar
Each played out completely differently. I have like 8 more different runs I want to play eventually in the future.
Sidenote: I also find it odd you call combat boring given its way more reactive and difficult than previous games. If you're playing on low difficulties without FF that's your prerogative.
Don't get me wrong, I was glad to have race options back, but I personally felt my race had less impact and was brought up less often than in Origins. Add to that the fact that there was no real conflict caused by your race, no one really treats you different because of it, and you end up with that same handful of mentions but without the playable origin, the ability to be racist, or have others be racist against you.
And how pray tell did you develop your inquisition? I'm going to hazard a guess and say it turned out as "a military organization, lead by the Herald of Andraste, with the support of Orlais (not shown) as well as either the mages or the templars (not shown) and possibly the wardens (not shown) aided by a dragon (finally we see something shown!) which stops Corypheus and closes the breach" that about right? It's 90% the same every time. If it's the wartable missions you're referring to as a good role play/story element then I disagree. I want to do things and see things happen, and see the consequences of those actions. I'm not going to be satisfied with short notes on the ground or wartable missions where your involvement is "send this person" and your outcome is a note saying "this totally happened, have 20 influence."
You may have been satisfied with the amount of content available to define your character, I wasn't. You have only the main plot and companion quests. In Origins and even DA2 you had the main plot, companion quests, AND a good number of relevant side quests that mostly didn't affect the larger story but added to the lore and atmosphere and let you define your character through your dialogue and actions. Less chances is less chances, regardless of you being satisfied with that amount or not.
Those "divergent paths" consist of mages or templars which give you one different quest for the side you choose (yay!) but nothing after that, and drinking from the well (again two different short quests but the story plays out the same).
I personally don't consider "fetch some items to gain a specialization" to equal "meaning and impact." Give me the way Origins did it through little story bits (ex: finding the ancient elven spirit in the ruins for arcane warrior, make a deal with the desire demon to learn blood magic, or even make friends with someone and have them teach you, etc...) any day. The little comments from one or two of the characters about your specialization in DA:I were nice, but not worth even more fetch questing imo.
I like the romances and companion quests but you can get every companion quest in a single playthrough and I don't like the game itself enough to play the entire thing again (as I said before) to see the romances I hadn't done yet (Josephine, Sera, Cullen) so I watched them online and saved myself 50 hours of finding lost socks and collecting herbs. I also don't see how any of the companion quests are so much more divergent than previous companion quests. You could sell Fenris back into slavery or help him be free of it, kill Merril's entire clan or not, etc...that seems pretty "divergent" to me.
I'll be honest, I never liked the combat in DA, it's just not the style I prefer. I have fun with ME2-3 combat, SR4, Skyrim's archery and magic, etc...however at least in DA:O you had a much larger pool of skills to choose from and could access ALL of them through the radial menu with no arbitrary 8 skill restriction. You could also set detailed companion tactics, switch weapon sets on the fly so you can hit an enemy with arrows if you can't get to them on foot, switch out a weapon because of the enemy being immune to that element, etc...not to mention the AI wasn't pants-on-head retarded most of the time, and even when it was you could assume direct control, move a party member, and they'd stay there. There have been several battles in DA:I where the ranged characters I manually moved to good vantage points at a safe distance immediately ran back into melee range when I switched to a different character (and no, those characters didn't have any short range abilities, I made sure of it). I don't like having to micromanage what my party is doing (especially when the ability pool is so limited and it becomes very rinse and repeat) and I REALLY don't like babysitting them to make sure they don't die of stupidity.
Your characters are not that different, none of ours are. The differing dialogue options just aren't there in most cases. Like I said you're neutral in tone and good in character the inquisitor seems mostly devoid of passion. No sleazeballs, no money grubbers, no racists, no cowards, no Lotharios, no ruthless "whatever it takes" types no evil characters because there are no evil choices. There are choices between workable scenario one and workable scenario 2 mages/templars, you drink/Morrigan drinks, Celine/Gaspard.
It's great that you've found a game you seem to really love in DA:I and more power to you, but I haven't. Your passion for the game and perception of it isn't going to make me suddenly ignore all the things I hated as I suspect my disappointment in it isn't going to impact your enjoyment.