Are some hyper skills replaced by hyper stats?

Putting points into main stat is a waste, since your %stat potentials don't apply to it.
I agree that crit is a bit expensive. Would make more sense to have it 2% per level.

I don't really see how it's a waste.
150 main stat is probably doing more for your damage than 10% ignore def, which for me causes my IED to jump from 79% to 80%, which isn't even a 15 increase in damage.