I know the desire to use ammo synth and consumables more readily is there, and I've seen suggestions about holding reload to use an ammo synth on your current weapon with which I completely agree. However, what about the glimmer gain consumables? My suggestion is put a graphic with the d-pad on the nav window, and bind the 4 options to Up Down Left Right, or just put a clone of your consumables inventory on there that is navigable using the d-pad, that way you could access synth and consumables. It would be a much quicker way to activate them than going to your start menu and leaving your view of what's happening during combat. (Sorry if this has already been suggested, I didn't have a lot of time to search through other topics.) There are probably better ways you could set it up (just thought about this in passing), but using that nav screen for more than orbit and sparrow summoning seems like something they ought to consider. tl:dr - It wasn't that long. Use the NAV window for quick access to consumables.