That doesnt really make much sense to me.
Id love to see more variety, more guilds, even if they are NPC only guilds, like the Cammona Tong in Morrowind.
Ratcatchers would be fun, they could complain about fighters guild recruits who always leave a mess of entrails, instead of using clean poison.
Maybe there could be something like in Vivec city, wich had potters and tanners and the like. In the largest towns there could be a place with representatives of certain guilds.
Something like a house of earthly delights might also be fun.