So I am quite lucky to have some of my alliance members close by. Due to my choices on hero perk points, the culture of my towns is dependant on where my hero currently resides.
This causes issues with controlling global resources however. I cannot lend the sugar resource to my alliance member and neighbour Guss, because whenever my hero joins/leaves my main town, the resource is 'reset' and has to be lent to them again. This gets annoying after a while.
Issue is sorta shown here: http://imgur.com/SraMkhI
This could be easily resolved by not razing the global resource buildings of your alliance members.
Any feedback on this would be quite welcome.