Tyranny's ending is perfectly acceptable with the patched side-with-Kyros option.
The ending itself is fine whether you stay loyal or not, although for the other endings it really does beg for a sequel.
But act 3 is so clearly rushed. You have four encounters and that’s really it. Why are Ashe and Nerat and Bleden Mark and Tunon all dropping awesome artifacts with reputation meters when you never have a chance to use them? Why is there a whole edict panel when you only have a couple chances to use them? It’s unfinished.
I liked Tyranny a lot—enough for three playthroughs—but Feargus pillaged its budget to make POE and it shows.
Let me put it this way: act one is great. If the rest of the game offered that level of choice, both in terms of the narrative and how you approach problems, I would call it a truly great RPG (combatfags would still disagree but there’s no pleasing everyone). Act 2 starts to have some glaring flaws: every dungeon is the same repetitive oldwalls garbage and some parts of the main quest get railroady. Compare the Stormlands, where the setting is fleshed out and the big quest has multiple solutions, to earthquake central where most paths railroad you with Cairn. They clearly spent a lot more time on some of these places than others.
As for act three, I think the content that’s there is very strong, especially the trials, but you really feel the lack of what’s not there and it makes the game feel like it was wrapped up in a hurry.
I’m replaying right now with the DLC and I can say that Tales From the Tiers adds a lot in terms of the pacing. Getting random encounters on the map—both combat and CYOA sequences—makes the game feel more fleshed out. Maybe my read on the end will feel different but I’m betting the game will still feel incomplete.
As I’ve said before, though, if the biggest complaint about a game is that there’s not enough of it, that’s a high quality problem.