In terms of time spent I believe there's less time needed to get to end game now than what was needed in either vanilla or BC. Personally, I'm fine with leveling as it is. Asking for nerfing of XP for 85-90 right now is too soon. If you don't enjoy leveling, don't make alts. And if GC's musings about professions bears fruit, there may be a lot less need for alts.
I'm assuming that at some point, Blizzard will bow to the lazy and start providing near-end-game toons as a regular thing but I don't think I'll ever take advantage of it.