Sounds a whole lot like the way crews and flags work in OOO's original game, YPP. Though it would be awesome for guild to become more manageable.

This is probably the best way to build the MMO experience. I would be much more active in guild politics and recruiting if it were easier to manage things. I doubt it would even be that much work, relative to designing a new set of levels or adding a new class of monsters, and it would add as much or more to SK. I especially like:
Login message of the day
Mass mailing/multi-mailing
Last login
Guild membership log
Infractions system

One thing I'd like is a guild bulletin board. It'd be a mailbox that you could access in Guild Hall and read other player messages; to post, it would be like listing an auction: you write your message, and select how long you want it up for; and you can only have one message up.

I can totally see these as things to put into the guild hall- like a guild post office to do mass mailings, an office area that only officers/GMs see, etc.

I posted this in another place as well but I see this thread is more on guild halls ideas.

How about Guild Masters/Officers can hire NPC like an Auction house representative, a UV Applier, Unbinder, Kozma, Brinks and etc etc for lets say 100ce each NPC? These NPC will appear in the guild hall after hired.

These will be much much more convenient and the guild hall will actually become a place where the guild members can hang out and at the same time do things like reroll their UV and complain to their guildmates how punch gives them stupid UVs like curse when they don't use a faust. ; )

I'm supportive for all of these ideas - including Flamdrenites' and CycloneBird's - although the cost should be a bit higher (200, maybe 400 ce) while the NPC stays there forever once the payment is made.

One thing I don't like in the OP, however, is being inactive for a while constituting an infraction. Moreso a permanant infraction. A year or something like that without being active at all is understandable for some sort of action, but I know how much of a pain schoolwork can be - especially when you move into college years like myself, or university like those above me - and it wouldn't surprise me if I was offline for up to more than a month.

you got my support :D

The only reason I think permenant would be better, CycloneBird, is because otherwise it'd be easier to simply go to the Bazaar rather than pay a continual price. Most people running small guilds wouldn't bother, making the idea pointless.