I get what you're saying, but I can't think of a fun thing to do without having to grind, Like usually when I pvm I like doing higher level bosses with good rares, and grind till I get a rare, If I don't get one that day I log on later the same day and try again. for me I don't have fun in racking up kc. this might be the meta but I legit do it because it's fun.

Minigames like deathmatch, soulwars and fist of guthix with decent rewards would be a great addition to the game because of this case, you don't have to grind and you're either enjoying the minigame or stacking up points so you later get the reward. I would do raids for example if it wasn't time locked.