Any thought on doing Master class's. Where person would need to meet certain requirements, such as x amount of a stat(s) such as 500 str, con, ect, or have to reach certain RR. These class's would be more powerful then the current custom class's that is available at starting area. Then would have to go out to the world, dungeons, ect to find the trainer for this class, then have to do a short quest and then be reverted back to lvl 1 once become class (would require a relog to reset specs and class abilities). Once this is done you can not use the i45/50 npc or the /level command for the master class, but have to grind (or get pl'ed) to 50.
To make things even more interesting, the more powerful the master class is, the more difficult location the trainer is in. Such as a master class that's just a little stronger then base class's or is a support/healer is out in the wide open but slightly hidden. While one that makes base class's look like push overs, is located near the cow king in the cow lvl, and will only talk to you once the cow king is killed (with quest of killing the cow king, lol jk).