Pleaseeee!!!! you should really consider this instead of doing 2x exp or so, that way people would move to new maps and explore further to more difficult maps because it would be ok if u die. Also it would allow players to further develope their playing skill since u could do more risky movements and stuff and see what works better and what doesn't.
Aaaaaand u shouldn't have to worry about lagg for a while xD (because I allways die because of the lagg and lose all the exp I gained...T_T)