Piratecat
Sesquipedalian
What were tengu? I think I can order that at a sushi restaurant...I'm not sure why they'd bother to reintroduce illumians. They appeared right at the end of the 3.x era, didn't grab anyone's imagination, and have a rather obscure schtick.
Mind you, the same could be said of goliaths, so....
I'm hoping for tengu, personally.
I wish I liked goliaths more. I mean, I want to like them. I just don't have a handle on them that excites me. Same with illumians; they don't seem to add much for me. I think I need to make goliaths the degenerate, savage far-realm worshiping mountain race. That's flavor I can work with.
I loved kenku, but that love is irrationally based on their 1e Fiend Folio illustration. I'd totally love thri kreen as a race. And who wouldn't want to play a bullywug! Hop attack FTW.