Add to that how the land was set up, Morrowind had a lot of central mountains and was generally very uneven, Cyrodiil is basically a big funnel sloping inwards and is actually very plain, you got no canyons and small valleys. That made it all seem like you're just on the other side of a big hole.
imo, this is all that made Morrowind feel larger. Even with MGE's distant land, the game feel huge. Even with the Boots of Blinding Speed glitch, the game feel huge.
Yes, I have. My knight is far too weighed down just from his armor and weapon.
And so you should. Morrowind forced you to actually think about what you wore. You may choose Steel over Daedric because of the weight. The best armours in the game need some kind of drawback.
(heavy armor characters shouldn't be so cumbersome with a speed of 53)
First word: Heavy. carrying a lot makes you slow down.
Speed 53 isn't a lot. That's roughly what you have in the begining of the game. Speed was an attractive attribute in Morrowind. There's no need for it in Oblivion, unless one of your skills need it.
If Morrowind had horses, I would be fine with its running speed, but it doesn't, and I'm not.
We're talking about TESV. I doubt they will disclude horses.