Things I hope never to see again:
1.) Playersexual characters - Just write the characters, give them their orientations, let people whine about it and have done. I'd rather them be allowed to be who they are rather than allow us to decide who they are and try to write around that possibility.
2.) The CAVE ... - OK, I agree with the poster who says it can put in an appearance for nostalgia value, but only if I get to destroy it in leaving. And the environments in general shouldn't recycle unless I actually am visiting the same place twice.
3.) Better time management in the writing - 10 years passed in Kirkwall, and the only one of your companions who had any actual development was Aveline? If it hadn't been for her having a life, the game would have seemed like a matter of weeks instead of actual years. I hope the writers do a better job of giving a sense that time actually is passing in the correct scale in DA:I.
4.) Better subtlety in writing - I loathed Anders' quest in act III. I knew as soon as he asked me that he was building a bomb. If you are going to pull the wool over our eyes with one of the companions ... Please, please, do a better job of disguising it. Yes, there are people in the world who do know the main ingredients of gun powder, BioWare!