Sadly the Krenim timeship is too powerful for player use. It could make a fun boss fight though. If it KOs a player that player does NOT respawn and their team must try to finish the battle without them. Needless to say, if everyone gets KOed the battle is over and the Krenim win!
It'd be interesting to play as a krenim though. the race seemed to have a better understanding of Temporal Physics than most.
Rigellian space turtles? Enh, ok. I'd rather see them in the game than yet another lockbox ship.