all i can say is if your bored at 50 then boxing isnt for you, questing at that level is awsome so many quests to do and with 2.3 patch you get insane amounts of xp,

took me no time at all to get from 50-60, now 60+ and its a long long slog to 70, either 4300+ kills a level (thats what kills to level addon tells me now at 64) or do quests and questing has taken me about 10-16 hours per level, these numbers are for boxing five.

at the moment to keep an intrest in it myself ive made a group of five different classes, paladin priest mage lock and hunter, and i level these when i run out of rested on my main team, this is what i do to keep intrest. Its helping alot because since ive done this ive really learnt how to write macros, and this has helped my shaman team out so so much, takeing what ive learnt from the five classes and rewriteing all the shaman macros.

i also recomend a kills to level addon i only just got it (at level 62) but its helping me out alot, its always a serious burn out when you hand in a quest at 97% complete of a level and you dont ding, so this little addon will give you that moral boost when things look bad.