I use cluster seeker mines and hive to revive personally. Mines are a great opener, as well as pointing out where NPCs are, and hive can save the day.
Specialization is really up to you, they all seem to be pretty good. YMMV.
I have been pretty stoked about cosmetics, I had one dye for my gear and had no idea where I got it, so I looked into it.
Look for orange crates hanging from orange parachutes or cranes, here are at least 10 of them https://cdn.mos.cms.futurecdn.net/mjY6kwUN8FdCYVpofmZSB5.jpg
There's way more than 10 boxes.
My own map I made since division2map.com wasn't updating fast enough few weeks ago, a couple can usually be the black resource boxes instead.
I have the hyena boxes marked too for chatterbox refarms.
The airdrops also drop 2 high ends every time so it's a good way to farm some gear if you're feeling lazy and don't want to run missions or something, they usual have a couple extra gear boxes in the nearby area too.
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