With the upcoming change of breed advantage tat nanomage get more nano and atrox get more hp. I will like to suggest another ability for the breed.

I remember reading tat for caster, their nuke/buff/debuff has a tendency to fumble/resist/counter and someone is asking to remove fumble entirely becaz we dun fumble with our finger when shooting with a gun.

Can I suggest tat beside the nano and hp difference of each breed, make fumble rate as another factor.

Nanomage = 0% fumble rate (Hey they are the master of nanobot)
Opifex = 15% (they are agile and so make few fumble)
Solitus = 30% (as usual we are not good but not bad either)
Atrox = 45% (Why? They are dumb, big hands and big fingers )

The percentage can be tweaked further by FC but nanomage should be the master in nano casting. This will also resolve the debate on effect of more nano vs more hp as well as truely give individual breed (especially nanomage) a distinctive difference.

Just my suggestion.