Guild Lvs : Lv1,Lv2,Lv3,Lv4,Lv5,Lv6,Lv7,Lv8,Lv9 and Lv10.
Basically, I think that guild lvs are made to encourage people to grind moar.
To lv the guild up, the guild needs to grind GP. I was thinking the ratio should be 300kGP: 1500exp(for the guild)
Ofc there should be advantages for making and grinding your guild to a certain lv. I thought of prizes, for example Aeon just reached Lv 6, I think a reasonable prize would be a 1 day 2x cupon for the guild, which the GM of the guild can only use. Also, I think that once you have gotten your guild to atleast Lv 4, there should be something that every1 can use in the guild, a guild storage. <--- Everytime you lv your guild up there will be added slots for more space.
Lv1- 10000 Exp
Lv2 - 20000 Exp
Lv 3- 30000 Exp
So on and so on.
Please tell/add any suggestions. Comment plox.