Two things:

One: I'm doing a massive overhaul on that class I made awhile back. Editing it, making it look nicer, trying to implement some stuff I've learned about home brew... etc. Hopefully make the whole thing look alot better.

Two: What do you think about feats for this class that lets you gain certain features early? For example, I would love to get the stomach feature and swallow whole before level 15, but that's not really an option. Adding a feat that gives us that (or a bonus if you already have it or gain it later) would be wonderful if you multiclass and such.

Not sure on the balance, but you're using a feat for it so I don't think it'd be that bad.