As a captain who likes to micromanage I like Guilder's idea. However as a person well versed with the ingenuity of trolls I see an exploit that is waiting to happen. Troll joins a lobby as a captain, swaps all the engineers to buff, chem, extinguisher. When the match starts he abandons the ship leaving the crew to suck and die.
The crew has precious little agency in this game. Robbing them of the ability to set their load out reduces their agency even further.