Its basically directly tied with how little companions we will get in the game, aka, less than 10. (probably 8??). Also tied to, yet again, the baffling decision to make a Baldur's Gate game dialogues... ALL into Tell tale cinematics; the work involved is probably HELL.
At the very least, 5 playable and around 10~12 companions would of been a perfect balance imho.
Larian, remove 40% of USELESS cinematic dialogues, use voiced text. And redirect the work into NEW COMPANIONS. Its that easy. Keep SUPER HIGH QUALITY cinematics for key storyline moments, emotional moments, action scenes etc...get rid of the overwhelming slooooow cinematic FLUFF in this game (its everywhere!!) to produce more quality content.