Well I'm not so sure. Frankly I think the no-class system is a good idea. You say lumping all two-handed weapons into a single skill is oversimplified. Well in earlier TES games you pick some skills to be your class, right? And then you increase them and gain a level. So by getting better at mixing potions and casting spells (or, in Daggerfall, speaking different languages) the character gains more health? And that makes sense how, exactly?
It's a game, there are always going to be some abstractions. Stealth and pickpocketing got lumped into a single skill in Morrowind too, even though they're vastly different activities. Do we really need to have them separately? I don't think so. I'm okay with that if it means it plays better. Because that's all that really matters, isn't it?
Getting rid of pointless skills in favor of something the players actually use is a long-time trend with this series. That was the way with language skills in Daggerfall, they went away because they were pointless. You know why spears went away in Oblivion? Because they're useless and nobody likes them. Face it, 99.9% of players outfit their character with a sword. The blunt weapons skill is useless for the same reason, and if Bethsoft are getting rid of it in favor of something actually useful, then I say that's a good thing. See, nobody ever uses maces. Therefore the character is not skilled with them, and therefore if there ever comes a situation in which using a mace would be advantageous the player still won't use one because their character sucks with them. If they lump maces and swords into a single skill, then the player is free to swap to a mace if facing some skeletons (not that maces have bonuses against the undead in TES, it's just an example). See what I mean? It seems like dumbing down, but actually it enables the player to use something they wouldn't have used otherwise and gives them more usable options.
Ditto for magic schools. I don't get what the furor was about getting rid of Mysticism, I think half the schools could go. Too many schools, too few effects per school.