2 more suggestions

1: Slayer Guild
2: Archers Quiver

1. Well I was thinking we should have a new slayer guild at 80 slayer with new slayer masters, an underground slayer dungeon with new creatures, and a place on the top floor where you can meet all the slayer master. And, of course, a master slayer store.
2. An archer's quiver. You can wear it like a cape and put like 3 different types of arrows in it, not including the arrows you are currently using. That way, you dont use up any inventory slots when coming from, say taverly dungeon fighting lessers, you dont want to use your rune (p) arrows to just take on a few druids, you would rather use steel arrows or something like that, but not waste inventory slots. Well this is what its for.

wow more great ideas, i personally think the arrow quiver would be useful maybe it would have an arrow limit though?

Yeah like a max of 3000 arrows and 3 different types of arrows. Like you could max out with 1k bronze 1k mith and 1k rune.
Or like heavier arrows (EG Rune) take up more space like max weight on the quiver of 10 KG

I like the quiver idea

If they ever made a Slayer Guild, they would probably ruin it and make it like 55+ Slayer and all that was good is a Slayer master which is near a tele (say Ardy) and maybe some of the lower slayer monsters or assignment monsters.

But, I'd prefer maybe a 70+ Req. with some of the more common tasks, and it being near a good place (near tele or bank).