Here is my dream solution for fixing Halo MCC.
Start over from the beginning, one game at a time. Make each game release an event, community evolved, custom games, competitions, prizes, history, stories, get newcomers involved. Release on PC, 4K. Remaster them to perfection and Anniversary treatment that adheres to the original styles.
Begin with Halo CE
1. Redo Halo Combat Evolved, dump the Anniversary make over, upgrade it with a consistent art style compared to the original. As some people know Halo CEA is based on the PC version and isn't quite as you remember it on the original Xbox so they need to remaster something that doesn't leave the Xbox version aspects behind but also includes the new PC content such as maps. Then they need to make coop work from the ground up, fix bugs like some things not being proper 60fps and other quirks. Give all the juice to one graphical mode, make the switch a main menu option before starting, not in game like now. Make the game perform like a dream.
Then, a little while later......the next event begins, Halo 2.
2. Redo Halo 2 Anniversary, remove the graphical in game switch and again, make it a main menu option so the game performs to it's best. Fix bugs, issues, cut scenes, maybe even remaster the in game cut scenes rather than rely on Blur. Release on PC. Make the multiplayer and coop work well.
After that, it's time for Halo 3 Anniversary and ODST Anniversary.
3. PC release, Anniversary upgrade. No in game switch. Bring back Firefight and have online matchmaking. Fix bugs and issues. Update playlists.
Then, onto Halo 4.
4. Not much to say here, fix the bugs, update the playlists. Spit and polish. PC release.
A while later, Halo Reach Anniversary
5. Yes, it does have Master Chief and Cortana! Give it the Anniversary treatment, no in game switch, PC release. Remove the horrible AA solution so we get nice clear visuals, update the playlists.
Are we done, no.
Get the UI right, Reach like! Matchmaking, Custom browser, Events, Community priority.
A big one and not sure about. Can anything be done with Forge so it's similar between games, maybe the use of shared assets, a PC release for community building.
What to call this dream update. The Mark V update. Opt in via Halo MCC and you get the stand alone product that releases with Halo CE Mark V Edition and the new UI. Halo 2 to follow, stay up to date in the news feed with community updates, easter eggs, competitions, Halo history, guides and more.