I will be honest, I hate the idea of a server wide stat reset but I do agree that the server gets boring after you get so strong. There is just nothing to do once you get to a certain point, but just doing it over again do not sound fun. There should be a NPC that you can talk too after you beat the last boss or some other filter so not ever body can do it, then they would offer you some kind of special currency to buy or upgrade weapons to a crazy level of power or maybe armor that has some cool enchantments. Another thing is maybe if you reset you get a boost in TP gained but all of the bosses/enemies get a bit harder. Again even with this idea the gap will keep getting bigger between new players and the average player, so in my opinion getting special items or rewards other then just more TP would be the best way to handle it. Maybe certain skills could get lock behind a wall like this so each time you go through all of the sagas you unlock new ways of playing, That way you could play with a melee build the first time to learn the ropes but then you unlock ki boost so you play a ki build the second go. These are just my ideas, let me know what you think.