Hey!
*queue Mad World by Gary Jules*
Sitting here, chatting with my guildies. If only we had a cool place to chill, chat and trade at, am I right? I mean, we could sit inside a Pokemon Center, but they're always all the same, filled with strangers.
*queue Back in Black by AC/DC*
No worries, here's the solution! Guild Houses!
Have there be sellable properties around the maps! Customizable properties that could be owned by either guilds or players. Carpets, tables, stuffed toys; the possibilities are ENDLESS! Perhaps even upgradeable to a house that can host trades or even PKMN healing? The possibilities are truly endless!
*initiate Trump's accent*
Make Pokemon Ruby, Sapphire and Emerald great again! Our guild house is going to be the best house. It really is. Look at China, their guild houses won't be as good as ours. We'll build a wall out of tables. It's gonna be a great wall, the best wall there is.
TL;DR - Guys, I think it would be a nifty idea to have houses. Whether they could be tradeable/sellable properties isn't the main point for having one, even though it would add an interesting spin to the economy. I'm sure many guilds/players would love a customizable house, similiar to the tree houses in Pokemon R/S/E
Your friendly neighbourhood skrub, Xelore.