This is kind of difficult. I thought combat in Morrowind was absolutely dreadful, because of this. I mean, had there been some different effects like, a slash from a spear briefly stunned the enemy, okay, but in practice, you were just going through one extra (Optional, there was the toggle in the menu) step to pick an animation for your attack. Often only one was useful I actually made a spear patch where Thrusts start always at 1 (Except for unique), increased the draw speed and increase the damage overall, while making Slash and Chop (Usually only on Halberds) more viable quick attacks. But that wasn't how the game was originally designed.
Yeah, I have to admit that I agree with you. I never play a BGS game without a major stats overhaul, so I just take that as a given...
Just for attributes in general though. Their impact on the game (Vanilla) is seriously negligible. Would I rather have had them tweaked to be more effective, and more seamlessly integrated into the overall experience? Of course. But I would rather have no attributes, than the exact system from Oblivion/Morrowind lifted and put in Skyrim. It just bludgeons you with its presence too much, which kills immersion more than all the dialog and clipping issues of Oblivion combined.
You're right, attributes have been a problem for a few reasons: limited use, easy to max out, etc, and their removal may not have a big impact on gameplay, but I would have vastly preferred that they fix the system rather than strip it down. (I'm also not convinced that they actually removed them, though it's possible for some of them. Speed, for example, has to be in the game in some form.)
To be fair, most of my argument is from fear of mod limitations. But I do think it's reasonable to expect BGS to generally match (and steal!) the improvements the mod community has made for the next release in a given series. I think Skyrim should be as good or better than Oblivion + mods, and that's where I get skeptical.