Know what I think would be funny to have in Warframe? Monkeys/Primates to fight alongside Tenno. One reason why I'd like this would be because, in the real world, monkeys/primates (gorillas, at least) are six times stronger than humans, even though they are roughly the same size, and have a reputation of tearing people's faces off. I also think it would be funny to see a gorilla pummel Alad V's Zanuka prototype in seconds. Whatever monkey you get partnered with, Ordis will yell at it to "quit monkeying around!", before spurting with static when he realizes the pun he made.
Of course, it won't just be gorillas; you can have chimpanzees, lemurs, orangs, spider monkeys, or any kind of monkey you want.