As if this week wasn't already interesting enough for Halo, according to an "insider" (lmao), Obsidian began prototyping a Destiny 2-style Halo MMO a few years ago where you play as a "soldier" and do quests, raids etc.
Dude's source is literally "my friend who works at Xbox" lmfao so more than likely faker than the Halo 3 Darth Vader helmet, but worth sharing nonetheless on the .00000007% chance it does end up being true