Perhaps a few new weapons only good in certain circumstances would be good? A weapon that rarely misses, but has a small, or even negative strength bonus would be good against bosses, but worthless as a PvP weapon because it cant KO. We probably have enough high-hitting, slow, inaccurate weapons already (GS, most specs, ect.). Weapons that have higher stats when fighting monsters which lower when attacking another player would mean you could have more powerful weapons that would'nt upset the PvP balance. Mabe weapons that change when you enter a PvP world to be less powerful that revert back when you enter a regular world? This would mean that they remain powerful during mini-games, but would not affect the balance on PvP worlds. Really, we just have to wait and see what Jagex decides to release #-o