I hav this idea too about skin weapon, since i like alot that skin weapon, but i think is kinda weird if change it now, coz already hav livid weapon in here.
For me sxp is surely we need alot, but for my oppinion, we need wise when choose some skill if we hav alot sxp surely ppl will more lazy to think which one skill we should use. so lack sxp make ppl, hav more variety skill and tree skill. Just my oppinion