I never played Morrowind but from the sound of it it seems like it concentrated more on battling then Oblivion did (where Oblivion mainly concentrated on questing and the battling was pretty simple).
That didn't bother me that much at all though since the battling is what turned me off from the MMOG and you had a difficult time getting into the quests because you had to constantly worry about leveling yourself up for monsters.
I do wonder though if the Skyrim world will be even bigger then Oblivion since on the Tamriel map Cyrodil is about twice as big as Skyrim.