Um, no? There is literally no point in having more skills than I can access or actually use. DDO had that because of it was based on v3.5 D&D. We didn't "make decisions." We took the exact same list of spells 99% of the time because they were the most effective spells. Blue Mage in FFXI is probably the best example of this concept being done right, but even they had specific layouts they'd take depending on the content they were doing and the role they were playing for that content. The only "choice" involved was possibly in which role you'd fill, but that was less often your choice than your group's choice. Choices like this get subsumed by cookie cutter builds, because in an MMO what's most effective will reign.
I feel like you don't properly understand what micromanagement is, either.