Couple of things I learned today.
Pressing up on the dpad highlights an enemy (holding up puts a 5 second timer on them as well)
Holding left stick in while descending a ladder makes you slide down it
When comparing DPS of guns, all currently equipped mods are taken into account. To get a true comparison you have to strip all mods off your equipped gun.
Eg I found a gun that put my DPS up from 24k to 28k, but after equipping all my mods my DPS was 34k.
Oh and if you have a healing station down and get taken down, you can crawl up to it and revive yourself.