1. Add an option to choose body-type for character creation screen.
This feature was semi-confrimmed in last Larian trailer, released at Game Awards ...
There was person that looked clearly as PC Barbarian Human, and he certainly was bulked.
I for one hope for tiny body option for my Warlock.
1. Add cinematic for jumping critical hit.
What?
4. Add unique models for unique items.
Wich unique item dont have unique model? O_o
5. Add an option to customize armor and weapons: add damaging effects (poison/fire/lightning/ice and etc.) for weapons and same resistance effects for armor.
So, you want to create your own elemental equipment?
Doesnt seem to be fitting the theme honestly. :-/ But as a reward for some quest in Baldur's Gate (or simmilar place where we WOULD have needed equipment) ... why not.
As for the rest ...
I see no reason to coment on it, this game is supposed to be based on DnD, im no expert but dont remember any of abilities you described to be anywhere in DnD, so chance for them to appear in game should be bellow zero.