In a way it did. Your character level and enemy level is scaled now with One Tamriel. That means no more fighting enemies that are levels above you, or - more importantly - levels below you or even trivial. Resultantly you'll always get maximum experience for killing an enemy rather than a diminished amount (or none at all).

Regardless, some will always think leveling is slow in this game.

Finally, it's important I feel to make the point that this is not your traditional MMO and that leveling is not the "most important" thing for a developed character; skill points are. So grind levels if you like, but honestly those people that are are just mostly being extremely inefficient with their time.

Not forever, but I've managed to stay in werewolf form for very, very long periods of time by staying in combat and devouring my enemies the first chance I get.