Currently soulbeast is in a REALLY... depressing state.
No potions? No regeneration? Fine. But add him vampirism.
You added vampirism ONLY to his claw ability? Bro.. Why?

IMHO you should allow vampirism ATLEAST for melee weapons, and leave claws only as a debuff. That would make him a race with an aggressive play-style, instead of being just another UI block that no one picks.
And no, I'm not talking about a Vanilla Terraria, I'm talking about Calamity and/or other mods that has way more than just a flying eye or funny worm.

He has buff to damage, but debuffs to resistance and health, making him the best high risk-high reward character. If you couldn't deal enough damage to heal back before the next hit you missed - you are dead!
I'm not a coder, and can't say how hard to turn this idea from a speech to an actual change, so here we are.
And sorry if there's mistakes, english isn't my native language.