Castle Wars and Soul Wars are fun safe PvP minigames, but they are very unbalanced in terms of what expensive gear can offer you in raw power over other players. This causes players who might otherwise engage in them during the minigame spotlight to shy away as they get stomped by wealthy players who can afford to use the best in slot items and boosts whenever the minigames are on spotlight.
As one step towards a more even playing field in these minigames, I propose adding free Elder Overload Salves to each, similar to what OSRS has done with free minigame combat potions in their Castle Wars and Soul Wars.
This would like I said just be one step towards making them more accessible, but it would hopefully be an easy change to implement and it has already been done in the Deathmatch minigame. It would make a big difference to costs per-game for new players and put their accuracy closer to others if they have even a t90 weapon.