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It seems pretty interesting. those later ones are supposed to be like a familiar or bondslave of some kind, right? I'm not sure how Yamatai would react to those.
That being said, I can see some of these being very useful, especially in a society like the Iroma's in which it would be the norm.
The charts here denote the general aptitude for races in regards to most modifications. Wes signed off on this a few months ago, although there are gaps for certain races.
If a race wants to be better adapted to use symbiotes, there are probably genetic therapies to facilitate it.