The Thri-Kreen in the monster manual look pretty buggy, at least to me, so you should be good there.
Although if they looked like Jeff Goldblum at the end of The Fly I wouldn't complain.
Didn't they have something like that in 1e, where each level of a class had a different title? Come to think of it, I Think someone made one of those for 5e.
Here, with subclasses up to XGtE, plus bonus Mystic if you use that.
So weapon proficiencies are worthless and only fighting style should be a thing, going by this one sentence in a description of a single class, am I getting that right?