Sarah Holding says that TS4 tech is more limiting than TS3 was.

Seriously even adding a damn beard, a thing that CC creators did since day one, is too difficult and too advanced? what kinda plum is this?

It's clear: The Sims 4's engine and quickly thrown together tech isn't supporting the game it should support. Explains a lot.
Getting a bit tired of the constant excuses. CC creators and Modders working their plum off to make amazing mods and CC, but EA can't do it? It's a shame. And again: via twitter. No communication on the forums, just all twitter chatter.