Hey 343,
I was thinking this a lot and I truly think it’ll be a very good idea for most of the halo fans. In order, for you guys to improve the Halo Game for Halo 5:Guardians and/or Halo MCC, then here’s my ideas.
1. COVENANTS / BOTS / FLOODS [V.S.] PLAYERS [CUSTOM GAMES(?)]
I think this will make the game very good, like this was never added in the halo series (firefight mode is a different topic but 50/50 matching the one I’m talking about it right now). By this custom game mode, it’ll be extremely fun for all split screen players (also Xbox Live players as well). Having the opportunity to set bot settings. I was dreaming about this mode ever since Halo 3: ODST was released. For me, I think 343 should add this mode A.S.A.P for Halo 5 (and if you want, for the Halo: MCC) 
2. TEAM SNIPERS / TEAM DOUBLES
Ever since the Original Halo 2 was released by Aka Bungie, team snipers was the best matchmaking mode ever! So we’re all asking you to bring the game mode back A.S.A.P for MCC and Halo 5 of course.
The idea[1] is a must, try your best to add that mode 343 please!!
I’ve played this before on a Halo PC but it was okay, wasn’t that fun,
but if you guys develop this like a real custom team slayer type, then hell
it would be beautiful experience!
Thanks for reading,
what you guys think about these two ideas??
Especially for the idea[1]
let me know below!