Bumping for my current experiences.......
1. Customization & progression: while progression is relatively fast if you complete challenges, most of the "ultimate rewards" that you get from said challenges are garbage. This week it's a Nokia glued to a specific helmet. The armor skins you get in campaign are cooler than those you unlock in progression. I do not get the point of the armor "cores". All I really want is OG Halo armor.
2. Gameplay: it is solid and fun. Lots of different ways to play. Shame everything else is lacking.
3. Stability: this game does crash, seems like BTB does it consistently. Pretty lame. I know it's not just me, I play with friends and when a match crashes for me, it crashes for them. That is, when it'll let you load into BTB without crashing in the lobby.
Still no mode filter.
I think I'll be switching to MCC for a while until Infinite is cleaned up.