I know this mechanic has been around for a while (at least since wrath when i started playing) but I've never really understood the purpose of it. Currently I'm lvling a rogue mostly through pvp and she is currently 56 with 3400 honor. It would be awesome if I could buy some lvl 90 pvp gear with it instead of running around with 4000 honor cap for 30+ lvl's. What's so bad about a lower lvl character having lvl 90 gear chilling in their bank waiting for them to ding? I really just don't see the purpose :/