I'm a fan of this, although I may be a bit biased do you plan on testing this once you get some more feedback?

I'm not much for crunch, but I'm ok at fluff and things like that so here we go!

Klik heals from eating metal, but Dies' "Liquid Soul" is healed by his own blood. Because of this I think it would make sense to have it be healed by the Intima's Graft Points. Maybe d6 per point or so? And if the host is a willing Intima (or other class with a graft point pool) wouldn't it make sense for the Liquid Soul to scale with level? A level 10 Intima with an arm that has a max of 18 hp doesn't make sense, especially considering the Intima is mostly a melee class.