<Snipped quote by Shorticus>
Which is why I'm still okay with several hundred years.
But, you know, the Xim could genetically enhance them to be stronger and faster and less pathetic, without increasing their aggression or anything. They do things like to themselves practically on a monthly basis
Of course! And... I'm not going to say "no" to that outright. But the reason that's not something the Namilee want to do:
They don't see a need for that. They don't want to be super strong or super fast. They just want to be left alone, to use their considerable brainpower to create new art, to discover new things, etc. They're not 100% against genetic modification, but to them, it's just unnecessary.
Some of them might be interested in this, note. They've USED genetic modification in the past. That's even in the leader's bio. But for them, there has to be a purpose to it, and becoming stronger is not a purpose in and of itself.
Now, if it were advertised as a means to an end, and advertised well, it's possible they'd be more interested. But overall, they don't see the need, even though they're literally running away from super dangerous bug aliens that want to murder them all.
NOTE: This stance is subject to change. The Namilee may modify themselves one day. Like with weapons tech and killing, this may become a necessity.