I made this suggestion in the forum, and we all know where that is now, so i'm reposting it here!
I talked about how as a prestige it's hard to find the ideal party for your grinding session. You can never really see what type of party this person is in, nor the party bonus. This UI i made shows a party UI section that displays every party in the server.
(For better organization, you could sort this list by party bonus)
The member list should put the party leader in the first LayoutOrder so players can know who is leading the party, and displays the rest of the members.
There were also some additional features Sinister added on when i made the forum post, such as passing leadership between party members (everyone wants this), and changing party types (Gold>Exp, Exp>Gold).
I'd also like to add that we should have a "Recieve Party Requests" setting, where if turned off, other party leaders cannot invite you to their party.
And a final plus, put the Team HUD at the top right corner, now that it's vertical.