Say you're having an event with 2 teams. They each have their own hangout area on your res where they can converse and share their strategies with each other before the event. The only problem is, if they're on the same res, they can't use res chat without sharing their strategies with the other team. You have subzones set up for each of the team's bases, so why not have a separate chat for each subzone? It's not like you can be in group chat, because you can't be in 2 groups at once, and res chat will not work because of the things mentioned previously. Your solution: Subzone chat! Could be like follows:
Although possible to implement. I do not see us ever adding this. Subzones are really just residences in a residence. We operate on the top residence instead of the subzone for residence chat.