Talking about guilds and taxes, it would be handy if a certain upkeep was automatically detracted from a Lord's tax share and added to the temple treasury on tax day, provided that the guild house is located in said Lord's region. Even knights should be able to do this. Pretty much in the same way as funding militia.
It sucks to go away on a campaign and see your guild house shrink in size because you were unable to refuel it's treasury in time.