Yeah, I'm one off getting the Baur - used it before and as a field upgrade. Not the best. It has high recoil and the 'breathing' makes it too difficult to shoot decently at mid-long range. One unlock off getting the baur and I'm working on the Voss tree instead.
The rockets are only good in certain situations, like clearing the upper walkway thingies o the Titan. However an adequate grenade thrower can o the same thing with less effort so I dunno... Shotgun isn't bad if you want to sneak up on someone and shoot them in the back of the head, but otherwise it's pretty shitty.
Active camo, and the whole Lambert tree is in general a good unlock tree. Active camo allows you to get into perfect positions fo ambushes, or make an easier getaway, (if yu want to run away that's fine, but runnng away with active camo on makes it a lot harder to hit you, especially at mid/long range. That being said a sharp eyed or intelligent marksman will be able to shoot you, but I have found surprisingly few of them. Active camo is also good to make you less conspicuous. Whe moving in a squad through dangerous areas, turn it on at times so the enemy will go for the un-camoflaged guys first, or at least concentrate on them more.
Active camo for Snipers, (as you won't have the Lambert unlocked yet,) is only decent for getting to and from Sniping spots, or for the more recklass Sniper, moving up and getting close enough to have a shot at a few knife kills.
I endorce active camo anyways. Have fun Fancy, if it dosn't float your boat then just wait until the next unlock, which in 2142 is never far away.