I wouldn't be against the idea of an ODST/Reach styled game, anything at this point would be better than nothing I would imagine... Only reason I ever purchased an Xbox to start with 15+ years ago was for Halo and Fable.
All games this gen look like they were made for base consoles because they essentially were. The mid gen upgrades just provide increased resolution, maybe tweaks to some other settings. X1X for the most part just shrinks the gap between the visual fidelity of a standard X1 with a higher end gaming PC.
Now its worth considering Halo 5 looks pretty good for a locked 60 fps game, but it never had the most impressive visuals. I mean Star Wars BF2 and Battlefield games look better. So frankly, the problem isn't the game was built for X1, it just wasn't a great looking game to begin with.
A new Halo game doesn't necessarily have to be built for the X1X first to look better, they just need to make a better looking game. There is a huge visual disparity between Halo 3, Reach and Halo 4 in the same generation.
Its also worth noting X1X games could have better graphics settings at the cost of resolution. Rise of the Tomb Raider for example has an option for improved settings over resolution. They should have offered that on Halo 5 for X1X, even better shadows, draw distance and LOD at the cost of resolution.
Crackdown 3 for X1S/X1X (4/5) - Infinity Blade III - for iPad 4 (3/5) - Infinity Blade II - for iPad 4 (4/5) - Infinity Blade - for iPad 4 (4/5) - Wolfenstein: The Old Blood for X1 (3/5) - Assassin's Creed: Origins for X1 (3/5) - Uncharted: Lost Legacy for PS4 (4/5) - EA UFC 3 for X1 (4/5) - Doom for X1 (4/5) - Titanfall 2 for X1 (4/5) - Super Mario 3D World for Wii U (4/5) - South Park: The Stick of Truth for X1 BC (4/5) - Call of Duty: WWII for X1 (4/5) -Wolfenstein II for X1 - (4/5) - Dead or Alive: Dimensions for 3DS (4/5) - Marvel vs Capcom: Infinite for X1 (3/5) - Halo Wars 2 for X1/PC (4/5) - Halo Wars: DE for X1 (4/5) - Tekken 7 for X1 (4/5) - Injustice 2 for X1 (4/5) - Yakuza 5 for PS3 (3/5) - Battlefield 1 (Campaign) for X1 (3/5) - Assassin's Creed: Syndicate for X1 (4/5) - Call of Duty: Infinite Warfare for X1 (4/5) - Call of Duty: MW Remastered for X1 (4/5) - Donkey Kong Country Returns for 3DS (4/5) - Forza Horizon 3 for X1 (5/5)