Okay.
Better animations. They are still pretty poor in comparison to other games. Cut scenes can be quite awkward to watch (there are exceptions of course).
No empty space. What I mean is no huge areas with nothing in them. A lot of locations in Inquisition were large, but didn't have much in them. It felt like a hassle to explore. That being said, some of the smaller dungeons were fantastic.
Places that matter. In Inquisition, I felt a lot of the locations we could go to felt unimportant. Sure, there was fun to be had everywhere, but not everyplace felt necessary. I had no reason for going to the Hissing Wastes. It was just there and I felt like I had to. I want locations that give me a reason for exploring.
Good boss fights. The Archdemon was amazing. The Dragons were a joy to fight. The Arishok was a cool fight. I want more of this.
Good final boss. Corypheus was kinda dull, in my honest opinion. The fight didn't feel challenging. It just sort of happened. The last boss in Trespasser was great though. Something that is challenging and feels different from just tough enemies.
Enemy talents. In Origins, the enemies we fought were a lot like us. They could do the same things as us. This has slowly gone away though the series, but it made each fight feel more complex.
Varied enemies. You know what would be cool? Fighting a Knight Enchanter. Inquisition had a lot of stuff to fight, but I want it to branch off more.
Strong central story. Inquisition almost got it right, but missed a bit. A strong story that is always in our mind. This goes back to the locations point. Everything I do should feel like it is serving a greater purpose. I want the story to be strong and vast, filled with lore and amazing character interactions.
Good villains. I want a Villain that is a good character. With Solas being the (likely) next antagonist, we already have an established character. But we shouldn't just leave it at that. I felt Corypheus could have been great, but was given little development. With Solas or whoever the next big bad is, I hope they feel important.
Not feeling like I'm always going to win. In Inquisition, you are this unstoppable force that doesn't really struggle too much. Sure, we start off slow and are attack at Haven. But after that, you are constantly winning every major battle you are in. Corypheus doesn't even feel like a threat anymore. I don't like this. Even when I accomplish a goal, I want to feel like I could fail at any moment, that in the end we could lose.
Return of the Warden. I know this is likely not going to happen, but I would love to see the Warden (or the Warden Commander if your Warden dies). I know it would be difficult with the voice thing, but it isn't impossible. We could have a character customization screen like for Hawke. Even better would be a sigment (or DLC) where we get to play as them in the West looking for the cure to the Calling. It wouldn't even require a voice. But it is something I want and many others want (if the character survey on Facebook is anything to go off of).
This is all I can think of right now, but I'm sure I have more.