Lemme first reply on other ideas;
-Better main character appearance & animation:
Graphics are graphics. I could care less. Although a beatiful Khajit? Yeah, I don't understand why RPG's *need* to have Oblivion type char generation. Especially since 80% of what you can create is horrible to look at, so might as well give only that 20%
don't make him a silent hero
For the love of god, NOOOO. Look at DA2 for why. I rather wish they took these resources to make more NPC's and quests and situations (improving the game) then to use them to make the game 20% worse.
Blocking would be nice. Hold your shield up till you reach the ranger (not suggested for wizards). Until you get the high-level rush attack

.
Permanent Buff is just silly though. That's what passive skills are for.
-More ways to pimp your pet:
No objections here.
-More side quests & more loot:
Who doesn't want that? Well, besides you because you want to spend the resources that can be used on NPC voice-actors to make the PC voiced.
Nice!
Divinity 2 had a little too much humor involved in most of the characters behavior and actions
Ugh. If Divinity II was serious all around I doubt I could have enjoyed it (as) much.
i would ask for better balance
It's an SP game. What fun would there be if it's 100% balanced. Unless I miss-interpretate your intention here. (and remember; bugs are bugs. Not balance)
Falling damage wasn't in this game because you transform by leaping off of cliffs.
Wait. Whut? So because you should jump of a cliff and save yourself by turning a dragon there is no falling damage? And if you couldn't save yourself by turning a dragon, only THEN do you need to splatter and die? Personally I would claim the opposite...
And make sure that out moral choices and aligment will have more impact/meaning in game world.
Choices, sure. Alignment? Why add that in? That's just restrictive.
Own additions;
* Less action, more RPG. But that may be just me loving RPG-games. So more non-combat skills (besides lockpick and mindread), XP awards to avoid certain combat events, choices having more effect.
* If Dragon Form makes it's return, more quests like the Zeppellin escort and less "no risk what-so-ever" destroying towers. Or as someone else mentioned anti-human estallages which need to be taken down. Something to break the easy drag-on it was in ED.
Oh, and no "find x items in y places, which you cannot see in dragon form, so you have to de-form in pretty much all of them.
* If you make a 'kill list' have it be an actual list, where you can click entries. And if you then want to scroll 250 pages, sure. Or just return to the actually easy to overview list.
* Make quest reward choices difficult instead of making me always pick XP because the rest is crap anyways.
That's all I can think of, at any rate...

Yes, lack of imagination...