Then why not just adjust the guildmaster level after the highest PC level. No real need for XP. XP isn't used for anything but book keeping in PF. So we could say something like<br/><br/>PC level       GM level<br/>1                   7<br/>2                   7<br/>3                   7<br/>4                   8<br/>5                   8<br/>6                   8<br/>7                   9<br/>8                   9<br/>9                   9<br/><br/>Could even be expanded with support staff levels too.