In OoT's overworld's favor: The night and day cycle was pretty cool and novel for the time, and still lends a nice atmosphere to the whole place. The first time I got to the overworld I was awed at how big it was, and it was pretty mysterious. The second time I came to it I had a horse, which was awesome, and shooting enemies while riding said horse with arrows was cool. It's pretty empty and plain, but it was really just a connecting hub for the other areas, it never really seemed like a big deal to me. The terrain in Majora's Mask was much better though, from what I remember.
