My biggest beef in recent versions is the automatic use of generic built in skills. I hate it when I ask a simple question and it says "OK! Time to use the RESEARCHING_CRAZY_PROBLEM skill! I'll kickstart the 20 step process!" when before it would just answer the question.

You can control this behavior, so it's not a dealbreaker. But it shows a sort of optimism that skills make everything better. My experience is that skills are only useful for specific workflows, not as a way to broadly or generally enhance the LLM.