removing mysticism and putting the spells into something else? good, as all those spell trees were nearly the same in one way or another.
removing spears... bad. if you didn't want the spear don't use it. it didn't need its own skill tree it could have went into 2 hand, or one hand or that matter.
Mysticism had it's place in the magic system and I would really like if they overhaul skills and return it.
Mysticism would be an additional skill in Magic branch, Unarmored (it would have Athletics/Acrobatics-like perks) would be an additional skill in Stealth branch, and Unarmed would be an additional skill in Combat branch.
That skill was awesome and had it's place.
Add to that the increased hand-holding, and I really don't think anyone can deny that one of their primary goals with Skyrim was to make it appeal to everyone with a games console, rather than fans of open-world RPGs.
As a result, we have an open-world RPG that's vastly inferior to the ones that came before it.
Dungeons are so simple you don't even need to look where are you going since you'll get to location you need to be without any problem anyway.
I think that I run into few dungeons which are exceptions, but there's simply too few of them.

