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

"InfinitexSims;13806714" wrote:
How is adding beards expensive? even i can do that!

The emphasis lies in the word "expensive". I think it's not a question of feasibility but simply of budget. You say, making a beard is not expensive? I'm with you. That makes me think how bad the budget plan for Sims 4 must be when the suits don't even want to make such an investment!