It's not a matter of being enough , i believe the op's view on this is to give players and payers if you may , an incentive for reaching master belt which would take quite awhile to get to , but at the moment the staff members are trying to deflate the amount of tc being circulated daily in toribash .
I recall Skulfuk telling me there is around 52mil Tc going around right now , and adding to that amount would obviously be a bad thing.
As charming as this suggestion of yours may be , i don't see it happening, perhaps a non tradable item would be more decent and less harmful, or a special force , which would be awarded to those who legitimately reached master belt , even though i'm not against the concept of buying qi , it's just something for those who actually toiled to get there.