i agree this is a good idea, as dont want a load of ppl growing too fast too quick or it puts off new comers!
You don't have have to worry about that, it could be set at 5X exp and with the current exp per level it would still make no difference to "putting new comers off." Losing the current player base in order to make it more approachable for new players who may not even exist is not a great strategy for a long term server.