If you didn't mind the emptiness of Mass Effect 1 (which is far worse than Inquisition in this regard), I think you're in good shape.
I think any perceived "emptiness" in a space game like Mass Effect is, at least in my view, a bit more justifiable if you're off exploring uncharted worlds in space compared to different fantasy setting biomes like DA. You're not expecting wholly uncharted planets to be filled with icons and people to meet and greet. I actually didn't mind that more often than not in ME1.
So even in something like Inquisition, I never had too much of an issue with an area like the Hissing Wastes since its a huge desert and felt like a huge desert. I appreciated there weren't copious amounts of Ubisoft collectable icons cluttering the whole thing up. Where I think modern BioWare struggles is in spots like Val Royeaux in Inquisition. There is a spot where its supposed to be a bustling metropolis and even in the one market square you're limited to, it felt especially lifeless and sterile.
Just the lack of many populated areas and BioWare's inability to show off many populated areas in Inquisition has me worried about how they're trying to make Frostbite work for them with RPGs. Clearly a bunch of the development time with Inquisition was to get basic RPG systems in place in Frostbite but at least there it very much seemed like they were trying to get that engine to do things it was never intended to do ( like the tactical cam or lack of traditional BioWare cinematic dialogues). Obviously doing a shooter RPG like ME should be way easier to translate than DA but I'm still not sold on whether Frostbite is a good fit for BioWare RPGs.
With both Mass Effect and Inquisition, it feels weird to go back in time to an earlier save before I beat the main game.
Well with Inquisition, you actually continue after the end boss in the post end game world state, which I thought was handled really well, as opposed to The Witcher or ME where you kind of go to a post end game state or one where the main story stuff is kind of ignored. I loved how you at least got a couple dialogues with your companions post game in DAI to give them some rationale to keep exploring with your Inquisitor before doing whatever they were said to do in the epilogue slides.