Because tracer darts worked so well in BC2. This is a jet whore's wet dream.
I dunno. Let's run with that. Let's say you give the SOFLAM or PLD to the engineer, remove one of the others (probably the SOFLAM since it can be "remote controlled" so it isn't a squishy target?) instead of being a recon kit item. This means a team of engineers need 1) a designator for the Javelin and 2) people equipped with Javelins.
Since BF4 has opened up the "you can make ANY loadout" loadouts... we could then have:
1) Javelin/PLD but Javelin is pointless without the PLD so you probably shouldn't have this loadout
2) Javelin/Repair Tool - Total Support provided people are PLD'ing.
3) PLD/Repair Tool - Total Support provided people are using your PLD locks while having the ability to support your team if nearby to repair them.
One of the major problems with the PLD and SOFLAM is that the range is short AND if you have a lock people can't lock-on since the range for lock-on is too short as well. IIRC I was trying to lockon to a target at 700 meters or so from one of the bases on Golmund but I had to come into 250-200 meter range to even get the LAW to lock-on.
I can't blame people for not using said PLD/SOFLAM and supporting their team is people can't even GET the locks to use to where they go with the "fire and hold" system because it's longer in range in general than the PLD/SOFLAM.
Probably the sand one...cannot think of the name but you get locked for days on it. Been binge playing for this damn phantom assignment so I tried rush for jet kills and had a bitch of a time when I hit Hainan and now I'm working on tank kills and just getting slaughtered. Actually got on a good team on Op Mortar and knocked the jet kills out in one match. Road killed the shit out of some fools and nearly have all the weapon kills but those 200 tank kills suck...
Tanks are not as fucked over by lockons as you're making them out to be. Again: A lot of maps have ample cover to allow you to smoke/ECM/whatever locks and break off. SImilar to Helicopters ECM/Flaring and then going around a building area to recharge/"bug out."
I
will readily admit that helicopters (not jets since Jets have LOL HIGHER THAN STINGER RANGE altitude) are fucked over by Stinger/IGLA's probably far more than they should be.
But Javelin "spam" isn't as bad as you're saying it is. I can count on maybe one hand how many times I thought "goddamn the Javelin spam is unreal" and most of those are generally attempting to fight a bomb over a paradrop spawn area (in Sabotage) or Rush/Conquest' having a team of four engineers paradropping on one squad mates recon Spawn Beacon.
Even then, unless they're firing their Javelins RIGHT. AT. THE. SAME. TIME. you can generally get away or stop their locks. I haven't seen a total lock-on domination outside of two rounds or so. But that's mostly due to how the playerbase doesn't coordinate in general.
They did that in BF2.
The one where you could have two seat jets that can carpet bomb and dominate an entire match with total impunity.
The concept of AA emplacements is something that they'll hopefully never go back to. Totally worthless against any decent pilot.
Let's not forget that BF2 also allowed pro-pilots to switch seats, throw missiles at people while dropping in altitude/"hovering" and then switch back to the pilot seat to continue to fly around before being able to pull that again.
The whole air vehicle balance is wonky in each of the Battlefields and why I cry out for a "ground vehicle/infantry only 'infantry only'" mode since BC2's helicopter-fucks of death circles.