This really needs to be added into Halo 5 like right now! I really missed being able to just hit a button to party up with other members of your team who did well so you can roll with a team instead of having to invite every single person. Plus people are lazy so even if your whole team did quite well and you want to party up, going to all their profiles and inviting is just SO HARD! lol
I remember that it was fun in Halo 3. They should add it again
I agree we need this plus other UI changes