If it's easy for you then good. But certainly not easy everyone.
Just because I can play this game while sitting upside down, one hand on my back, simultaneously cooking some nuggets, my two feet upward (yes, I'm *that* good), doesn't mean average people find it as easy as I did.
It's good balanced difficulty. We don't need 4200 AC enemies with 69000 BAB just for 23 people to be satisfied that this game is hard enough.
Maybe adding secret boss is a good option, something similar to PoE2 PoTD Ultimate Challenge.