Lots of skills are a feast of micromanging.
Alas, micromanaging has died out. Blizzard saw to it (that it happened).
Since Blizzard, everything has been reduced to ther absolute minimum. People feel overwhelmed by a lot of skills and talents like in Drakensang, for example. They are used to builds & skills like in mot Action-RPGs, reduced to the absolute minimum.
People have unlearned complex thinking. Blizzard's fast-food of RPGaming rules the world now.
The beauty of the NLT (Realms Of Arcania games) was of having a choice. I loved that. I loved having lots of skills vailable at my disposal.
In real-time combat, too many skills and talents don't work very well, though, imho.
I think that having lots of them is rather the domain of turn-based combat - which requires imho much, much *slower* thinking in general - than real-time combat, where everything must be quick and fast - and not thorough and well-thought.