It actually depends =/ it would be time to think of a good weapon, that doesn't change or make a class more overpowered than other, for one part to think of the stats, for the another to think of the sprite, if you actually make a weapon it would be nice if you really did one from scratch with new sprite and everything, which would take even more time, plus you need good spriters or however you call them to make the weapon, which don't fall from trees :P Apart from that, it's a good idea
Or you could change the actual stats from the actual weapons, meant for a high server 
(which uh, overpowerness ^_^)
