Personally, I hate the idea of being associated with a guild, especially since you are supposed to rise through its ranks to become the head honcho. I am the type of player who would prefer to just do their miscellaneous quests, which really could be considered miscellaneous/mercenary work by any normal means.
What I propose is this:
Spawn random quest-giving NPCs in generic taverns/towns that will offer you the same quests that the guilds do, like solving disputes with your fists (The Companions), whacking somebody (The Dark Brotherhood), simply finding some soul gems (College of Winterhold), or stealing/pilfering personal possessions (Thieves Guild), all completely repeatable, just like their regular counterparts.
This will add so much more depth to the game, so much more immersion.
I am not a modder, this is a request, to get generic 'jobs' to be carried out by people who are completely unassociated with any guilds, that are (in essence) the same as the guilds' misc. quests, just no guild story progression & a bit of gold upon completion.