There could be an expensive item that would need to be used to make your own clan (so that not any random new guy can make one). From there, you can invite anyone not already in a clan. Clan names would be displayed above others’ characters. Benefits of this include a community to level up with, trade with, and defeat bosses with. It may also introduce some competition between “rival” clans.
This has already been suggested. Please check if there are already posts with your suggestions before creating a new topic, thanks!
Even if you do check, you can always suggest it again with improvements on the previous post!
IMO it is better to just post your additions on the original post. It reduces spammed topics and has all information in the same place.
This has already been suggested and is planned once Roblox rolls out features to support cross-server chat.