I watch BattleRecorder to review all of my kit selections and spawn-in locations, as 95% of my game is spent staring at the spawn screen. I frequently find myself saying "Okay, had I chosen THAT kit instead, I would have lasted 14 seconds instead of 12 seconds..."
Here are some other helpful situational awareness tips I swear by:
1) When I am defending a flag and it turns gray on me, in retrospect I should probably have turned around at some point to look behind me.
2) Always make sure to check what team that tank is on before I try running at it with my wrench out to helpfully perform a repair.
3) I can only stand next to a tree and fire my gun for so long without moving before someone knives me.
4) If I note the direction someone runs in after they teabag me, I can get a heads up on where to spawn in at in order to receive another teabagging ASAP.
5) If I run past a claymore quick enough, I will still die.
6) When someone on my team spots enemies and all the red indicators appear on my mini-map, it is probably not a good idea to turn my mini-map off "because all those flashing dots are too distracting."
7) If I'm following my teammate around the corner and I see him die instantly, it's probably not the best idea to continue blindly around that corner, because chances are whoever killed him didn't use the entire magazine to do so and, unlike myself -- who forgot to reload since my last firefight 3 minutes ago -- will most likely have some ammunition left in his weapon to kill me as well.
8) If I'm going to impress everyone in the Blackhawk with a barrel roll, I better make damn well sure I can actually do one without crashing into the ground.
9) If corporate moves into my line of fire while I'm busy missing the enemy, the impending TK is his burden to carry, not my own.
10) The oldest trick in the book is for someone to run up to my tank and scare me into thinking they're going to blow it with C4, causing me to jump out and then they get my tank -- I only fall for this 16 or 17 times before I get wise to it.
11) If I'm going to throw my smoke grenade, I better damn well make sure I complete my maneuver through the smoke before it runs out and I'm left there standing out in the open like an idiot.
12) When encountering an enemy squad passing nearby, it would probably be far more effective to pick them off one by one from behind after they pass, rather than to stand up and start firing wildly at the first guy, in plain sight of the other 5 behind him that can quickly converge their gunfire onto my location.
13) If someone runs up to me with their shock paddles out, and I'm still alive... they're probably not trying to revive me, nor are they on my team.
14) First aid kits do not function anything like anti-vehicle mines, no matter how hard you wish.
15) While rapidly deploying C4, I must always remember POE2 has only FOUR C4 packs, not FIVE like in Vanilla
BF2.
16) If I am commander, it's not a very good tactical maneuver to pop smoke on my defenders when I see the enemy rushing the flag -- it just tends to piss them off.
17) When approaching a sniper to knife him, there are certain angles of approach that just don't work -- namely his forward 180-degree firing arc.
18) No matter how hard I try, I can not jump a tank over that hole in the bridge that's been taken out by C4.
19) I can assure you the rest of the squad does not find it funny when I'm leading the squad as a sniper and I plant my claymores nearby to prevent anyone from getting near me, because that also has an unfortunate side effect for my newly-spawning squadmates.
20) Remember... killing someone who's AFK, or busy responding to some trash talk I just typed in chat, is still a legit kill -- I'll take what I can get.
