You are getting close to just saying this one sentence

'Put vehicles back to Chromosome'

That would basically cover what you would be saying mostly, things like active reps, skills which provide somekind of useful bonuses and vehicles being used to take out other vehicles etc.

Early uprising ADS/HAV and even the LLAV were useful in PC matches and because they were strong in PC they were also strong to a point in pubs, this was more apperent in Chromosome but DUST never had decent matchmaking so a PC tanker could wipe the floor with the entire enemy team espc if they were militia etc.

Now vehicles have no variety, AV has more variety and is the go to choice when taking out vehicles since half the weapons do damage and against HAV weakspots now are everywhere on the hull. This doesn't include the amount of modules and skills pilots have lost aswell as never having a pilot suit which would be just for piloting and enhancing there role just like a commando does for swarms.

After 2 failed vehicle reworks your ideas in this thread will go into the depths anyways, CCP will ignore it as they do and they will stick to tweaking/breaking vehicles further.