| 8-Bit Rabbits |
While Biohacker is a real world, I think it's important to take modern language into consideration. Most people who hear the world "hacker" when applied to Biohacker are not thinking about the do it yourself biology presented in the technical definition. Some new options:
Grinder (what real life Biohackers call themselves)
Bio-Engineer
Geneticist
For the Vanguard, while it's a cool name and fits the mechanics, it doesn't fit the flavor. Maybe the following:
Axiom
Determinist
Entropist
Witchwarper is just something that doesn't make a lot of sense. I couldn't find anything tied to witches that made sense in the context of this class other than being a spell caster. I honestly think "Warper" would b just fine, or maybe "Jumper."