It doesn't seem there is a big enough award to having a high slayer level. Of course you can get granite items, boots, mystic robes, and an abyssal whip, but that isn't enough to keep interest in the skill. A better idea would be to have every slayer monster have a special drop. It doesn't make since to me when there are special monsters in the game that aren't even that special. Lastly, I don't understand Jagex including skills that don't give any initiative to get level 99. Once I'm 90 slayer, why would I go higher? Hopefully I'm not alone in this request.