I have two main problems with the RS combat system. These are the fundamental problems i see, which cannot be fixed without a complete revamp to the current combat levels. Firstly, is the inequality between range/mage and melee in terms of combat levels. Maxed rangers/mages have a significantly lower combat level to maxed meleers. This firstly makes it impossible to balance the other combat styles with melee - if 99 range is equivalent to 99 att/str, it becomes much more powerful for its combat level, if 99 str remains in its current state, a ranger/mage can never become as powerful as a maxed meleer. The second problem i see is the lack of 'proper' defense gear in runescape. I played a tank on WoW for a while, and there gearing system is radically different - "Defensive" gear offers two main types of bonuses: Avoidance - Reduces your chance of being hit at all, which is what rs gear gives, and Effective Health - Which increases the maximum amount of raw damage which you can withstand before dying. This occurs through armour, which reduces physical damage taken by a fixed amount, and stamina, which increases your maximum health. It is important to note that amongst most players, Effective Health was valued higher than Avoidance for almost all situations. However, in RS, very little of this gear appears, aside from two consumables to raise your max health, and a shield which costs hundreds of millions. This simplest option would be for armour to reduce damage taken by a fixed percentage, which would allow for stronger weapons to be introduced.