Many people who have played for a long time have had much more time than the newcomers to farm gold and best items. Many people are still leveling and if the lv cap is raised soon before any other updates(ie pets, guilds, elite dungeon(no exp gain), town..) there will be more less experienced players(not nessicerily good) with bad gear that get booted and will have a hard time lvingto catch up with the oldies by power leveling.

Conclusion: I dont encourage not making the lv cap higher, just that I think there are somethings more important and to keep the community together(guilds) and weekly events or quests are most common in MMOs (I think)

P.s If this should be in the suggestion place, well sorry for my mistake:P