Bumping and pointing out an inherent flaw of the way the Evolutionist has been run.

The Evolutionist is a blatant 'do everything' class. It's the only base class that uses its system, so it seems like it needs to do everything itself. That's bad class design. That is the source of many balance issues in D&D. Instead of putting everything into one base class, which makes the thing utterly insane in combinations able to obliterate game balance, it really should be a set of classes that sit down and say 'This is MY thing.'

For example, having separate base classes for Arcane, Divine and Psionic Mutators who get less mutations would make Evolutionist less... Crazy. Having over a dozen different things done by one class, when each thing can be easily given its own class to itself, makes bookkeeping and balancing a nightmare of combinatorial hell.

One of the worst things to do with a subsystem is to make only one base class that uses it. It makes the subsystem into nothing but a class feature. Look at Warlock Evocations, or the Incarnum subsystem. Warlock has only one or two fluff backgrounds and is the only base class that uses Evocations, when there could be so many different ways of using it. The Incarnum subsystem, on the other hand, has several different classes that use it which have different focuses.

Instead of one class for all the mutations, make several that have different things available. Have a half-Psionic half-Mutator, with functionally half progression in both Psionics and Mutator things, then give the Psionic mutations to them. Have a Mutator base class that gets arcane spell casting in exchange for lowered Mutator ability, then let them have spellcasting supporting mutations. Have all these other subsystems or weird things be in separated classes that focus on them, instead of just chucking it all in one base class and a pile of PRCs.