fallow current
This is a suggestion born out of Leagues, but would be nice to see in base game as well.
Champions Guild: No unlocks / restrictions
Cooking Guild: bank is locked behind the Varrock Hard Diary, but has the alternative option of also being unlocked at 99 Cooking. Just here for completion sake.
Crafting Guild: The Varrock Armour 3/4 counts as an item to enter the Cooks Guild, maybe the Falador Shield 3/4 could count for the Crafting Guild?
Farming Guild: Only unlocks are level based, and already make sense given the plots they unlock. But maybe X easy contract unlocks medium area, and X medium contracts unlocks hard early? Might be useful given the herb and fruit tree slots.
The Fishing Guild has the Minnow Platform which requires level 82 fishing, Fishing Contest, and Angler's Outfit. Big Shark :)
Hunters Guild: haven't done this yet, but I assume same as Farming Guild.
Hero's Guild: No unlocks / restrictions
Magic Guild: I think lock the rune shop behind Kandarian Diaries. Despite HitS being a pretty easy quest, the guild can't be accessed until level 66, so Hard is right around that ball-park.
Mining Guild: Bit different, as this only already "only" requires the Elite Diary, perhaps 99 also unlocks it as well?
While the Range Guild doesn't have anything locked inside of it, should the guild ever get a buff - I think the alterante unlock she be behind the Western Provinces. Not because location-wise it fits, but Chompy Hunting is ranger. I also think having two guild unlocks be behind Kandarian Diaries might pad out Kandarians rewards too much.
Warrior's Guild: No unlocks / restrictions
Woodcutting Guild: No unlocks / restrictions
astral karma
rugged jasper