why are they zooming in so close do you think? I dont get it?
Character models get in the way. Even now, you often get some random person blocking the camera shot. Lae'zel decides to stand off to Zevlor's right, so when the camera angles from the right she's blocking view of the speaker. Zoomed in shots minimize this.
What they really need to do is staged blocking, meaning they need all dialogues to take place in Turn Based Mode so everyone freezes in a set place every time. If you enter a dialogue, the world stops moving. This would prevent you from moving Astarion around to pick a character's pockets during dialogue, but that's not how that should work anyway. If you enter dialogue, you should not be able to switch characters and such to kill the person from behind or steal their things or whatever. That would fix a lot of issues.
Basically, lock dialogue so if you're in it everyone is in it. Fast travel the party together for the dialogue. Allow characters to switch during dialogue to utilize skill proficiencies better as a party. Then if you want to have one person distract a character so a thief can rob them, implement a Help function similar to the spell help they jist added. Astarion attempts a pickpocket, Gale is allowed to Help, Astarion receives advantage on his Sleight of Hand roll, cutscene shows Gale chatting with vendor about nothing while Astarion attempts to pick his pockets or take his stuff from a chest behind his back. Success, Astarion gets away with it. Failure, vendor turns and catches him.