Morrowind is the "winner" here because these forums are filled with the vocal minority who feel the need to defend it while Bethesda tries to bring in more casual players with new, more fun concepts. Morrowind is a good game and if it's your favorite in the series, more power to you. You'll always have Morrowind to go back to should you decide you don't agree with what Bethesda has done with Skyrim. I'm guessing, however, that it's not your favorite because of how it plays. You said it yourself, "and that aspect alone makes MW a winner." That "aspect" being the sense of being lost in an alien world yadda, yadda, yadda. That shouldn't have to change from game to game nor should it. Oblivion was a misstep in that regard because it dropped you in a generic fantasy world with no real culture. Morrowind will always have more of an emotional impact because of its uniqueness but don't let that fool you into thinking Oblivion didn't improve upon the gameplay.
The Elder Scrolls have always been about immersing you in a new world and each game moves more and more towards that in terms of physics, AI, more fluid gameplay, etc. Morrowind did it with it's story/lore which is an aspect that should never be overlooked. Skyrim will hopefully do the same while also improving upon the flawed gameplay of both Morrowing and Oblivion.
Of course Oblivion has the upper hand for "gameplay",but that's only because of the technology.That's not something Bethesda has achieved,not alone at least.It's not like they introduced something BRAND NEW.None of us are saying bethesda should create a game that's like Morrowind tecnology-wise now.However,when you say RPG,the atmosphere is as important.And atmosphere DOES affect the gameplay.
For example,I don't like the idea of fast travelling,but I used it all the time in Oblivion.That's because Oblivion's landscape was damn boring.It was not logical to walk from one city to another because there was nothing but same trees and enemies everywhere.You could see what you were about to encounter from the compass miles away.In Morrowind however,while walking from one city to another,you run over a hill to see the horrific,yet amazing view of a Daedric Ruin appearing from the mist*,totally unexpected.And all of the Daedric ruins were unique,thanks to handcrafted world.So,instead of yelling "No fast travel plz!!!11" I'm yelling "Make it so that I don't ever want to use fast travelling"
Honestly,think of Morrowind made with 2006 tecnology,or Oblivion made with 2004 technology.When they are even technology wise,MW becomes an absolute winner for me.That doesn't mean I didn't like Oblivion nor ignore its technological surperiority.But for me,technological surperiority comes after uniqueness.
Gameplay improvement means more options,better AI,better combat,more things to do and some physics for me.No,graphics don't count for me.In terms of AI,Oblivion wins clearly.Living NPC's FTW.Combat wise,Oblivion of course,though it had flaws.Physics,well I'm not sure.As much as I want them,I don't think Oblivion managed it.Thanks to items going flying when I accidentally touch the table they're laid on,I never managed to have a items gallery like I had in MW.Instead,I stored them in crates and looked at their icons >_> So,Half Life 2 is the clear winner here.More options to do,not sure either.Oblivion's AI gave more options with the NPC but its dull landscape killed dungeon diving.Modded MW with crafting wins I think.
More options,MW again.This is where "useless items" kick in.More skills,more weapons,more items,more of everything.Even if you don't use an item,when you open a crate it enlarges the list of possible loot so the more the item kinds,the slower you get bored of the game.I downloaded MISC ITEMS mods for my Morrowind.You know,items that are absolutely useless,other than adding to the atmosphere =)
So,fixing the physics,getting perks,giving more combat options,yes please.Cropping the skills,removing attributes,making it more and more simple,I cannot see this other than adjustments for potential players who cannot handle more than Life-Mana-Breath actually.Note that I'm not saying you are one.However,I think you are kinda offensive on previous games and "defenders"...
*Note:That mist was also thanks to limited view distance,a technological "disadvantage",and so seems the hand-crafted world XD
Wow long post...