The better man? There is no such thing [base class]

[Draken]

Nope, only the fact that natural attacks are normally hard to get, not given out like candy. Some 'brew breaks that by making natural attacks easy, but the class itself imposes a cap (take ozodrin as an example).The evolutionist should probably follow a similar example (though it's already limited by amount of body parts and the fact the not-body dependent ones have limits, so for a standard race their is a limit).

That's how it already works, unless you take a couple feats to alleviate it (which, let's be honest, anyone going for this many natural attacks is going to take at least those two, maybe a couple add-ons).

This.

The body part limit was not working, however. Since the class itself gives a way to increase the number of body parts avaiable. Plus, there are the extraordinaire mutations that give additional attacks linked to no specific body parts (Rake, Spines and Spores, to be precise)

Everything was adding up to a potential build that was little more than a deathball of sharp and heavy bits. So I imposed the hard limit.

I may add a feat to increase the limit.