Hi!
First of all, my apologies if the following has already been suggested but I couldn't find it...
Anyhow, during the Summer event we are able to purchase a flag of our country (or any other available of course), but what about a creating a Guild Flag?
I believe there's a finite amount of guild crests available so perhaps this could also be translated into a flowerbed flag without too much hassle for the devs?
Availibility would be best fitted in the decorations tab of the market and those who want (and still have space left on their island) could then display their colours, having paid their flag with just a few guild coins earned from taking part in daily GQ.
Cheers!