Since the GDC Panel, there has been much uproar throughout not only the Halo community but the entire gaming community as well. What every game is starting to do is resort to more “accessible” mechanics and make things more like other mainstream first person shooters.
We as the community should POLITELY do whatever we can to let 343 know our general opinion. We want Halo to return to its roots as a competitive, arena-style shooter complete with ALL features from previous installments in terms of Matchmaking, Forge, Theater, and Custom Games. What we want is for Halo 5 (or even an updated Halo 4)to EXPAND on the core of what made Halo 2 and 3 some of the most fun games to play. What this means is that Halo 5 should be built on the foundations of the Halo 2 and 3 game mechanics, including all features (gametypes, gametype options) of the previous games and EXPANDING on them to include new features. Certainly aspects of Halo: Reach can be trickled in (there were many things in Reach and even in 4 that were pretty cool to see), but the game should not be built on top of Reach.
I think the problem with Halo 4 was that it was built almost entirely off of the game engine and mechanics of Reach, which was already leaning towards the more “casual” side. What it should have done is built off of Halo 3 and trickled features from Reach on top of it like the frosting on a cake.
Every aspect of Halo needs to return to - and yes expand on - its roots, even the Campaign, which re-designed many iconic Halo trademarks such as the Master Chief’s armor with no explanation. If we peacefully negotiate with 343i, I’m sure we can all be satisfied with a brand new Halo experience to last a good few years.
Note: This is what I think the general consensus of the community is. You can disagree and specify your opinion below.