Why don't you make it so that you have to acquire enough currency to have a guild house put in place instead of having one made already and just getting someone to add it and then you can add perks into the guild house with these points e.g. guild statues, spar rooms etc.
Essentially the same belief as when it comes to player houses:
Personally though I've always thought that if it were just a tile editor or house template selector, it's a lot of scripting work for player content that ends up very generic/repetitive. The old fashion route would require a lot of organisation and publishing of resources/tutorials, but if successful would produce a far better end product. Being Classic/Graal the Adventure it would mean something to try and preserve that.
Do we really want something generic that is no different and no better than existing Facebook/Flash servers?
-------------------------------
On a side note, I propose that the Fort will be open for 30 minutes, once a day, at 7 PM alternating between the following 4 time zones:
- US Eastern Time, UTC - 5
- US Western Time, UTC - 8
- Australian Central Time, UTC + 13
- UK Time, UTC
(The exact hour may fluctuate according to daylight saving or server time deviations)
A lot of this depends on the playercount and demand which is of course a complete unknown at this point in time. Should this schedule be too demanding maybe it could be applied to weekends & holidays only. Should this schedule not satisfy demands it can always be set for the Fort to open more than once per day.