a ladder has equally spaced rungs to climb up. that's smart. that's well designed
right now, leveling a toon in wow is like having some rungs be 3' apart and others being 3" apart. that's poor design. it wouldn't even be difficult for all classes to scale in a nice linear way
they do this on purpose. everything is perfectly imbalanced because the second it's perfect wtf are they gonna talk about in the "upcoming patch"
we look forward to class buffs as much as content. it's fucked up, they think we're stupid because we are, and they still make a ton of cash on us. nothing is going to be done. class balance from 10-90 will be a major content patch later, watch.