I actually wouldn't mind an achievement diary of some sort. As long as it isn't like 30 seconds work to complete it, something a bit grindy
EDIT; Pali, if you could rework slayer a little bit, tasks mainly. If you are a brand new player and you've got the very basic gear and you start slayer and receive 15/20 Steel Dragons as your first or second task at level 65/75 how are you expecting someone that level to kill steel dragons with their high defense; for HC ironmen and Ironmen mostly. I was level 46 when I got my first 15 steel dragons tasks, fair enough you could go level up some more and then do slayer but still a pointless task for such a lower level imo. So if some of the tasks given for each combat bracket could have a little rework, that'd be pretty neat.