Most of the time with exotic races, they feel like a crutch for writing, to make them seem special and awesome while without the exotic race bit, they would be dull and uninteresting. The exotic race is their gimmick/identity.
So your complaint about nonhumans is that they're boring because they're often badly written.
I have a suggestion... What if... What if we had nonhumans who are well written?
Again, I feel like humans encourage lazy storytelling. There's the cliche that humans can do basically anything while other specieis are limited to "their thing", and I think that ditching humans would force you to put more effort into developing the members of other species a bit more.
