While I like the setting and IP of elder scrolls, and I'm playing skyrim, i've played oblivion and morrow wind and i just installed daggerfall last night.
I'll say this:
Bethsoft has the right idea when it comes to world building and story but really fucking suck at balancing games and making interesting combat systems.
All their games combat systems suck and are so dull. I have a hard time finishing lots of their games because they start difficult and then the difficulty just gets trivial later on.