The only real problem I had with it is why are these 4 voidwoken so special? They can use super CC and take you away, but every other voidwoken that looks exactly like them you can kill fairly easily.
I mean, I was more or less okay with it, but it feels a bit forced. Making a deliberately overpowered unique enemy just to force the game to take a specific turn isn't the necessarily the best way for that to be accomplished.
I would rather have had to repair some kind of damaged portal that when you go through it scatters your team around. Something like that.