I like to see "danger" or "cross" field specs

I like to say while am happy with what we are getting at launch i would like to see "Danger" or "Cross" Field specs that either double down on what the class does or cross train to be a weaker version of that class for example:

Frontline medic: an assault class cross that trained with support. that heal people with small med kit like in bf4 but they carry no stims with field peaks give them more to work with or give more health but do not come back with time and must be supplied by the support.

"Can opener": an engineer with a ax to grind with vehicles. either Carrying more rockets than normal or do more damage with them. they focus of killing ground vehicles but if they do more damage the rockets they fire drop much more as more filler has been put in. the don't have the repair tool but a experiment launcher that they S.T.E.A.L and use but having to go back to main base to resupply them. lastly if hit in the right spot they just dentate as they do have tampered explosives.

Sniper: a recon that focus on kill at long distance. they would get a faster and flatter bullet but at a cost of hand load each one in one at a time. withy perks that the either help handload go faster or get to know how much the bullet will drop give a dot in the scope.

"Rambo": a support that seen one to many 80s movie or got tired of reloading. they have all their belts linked to gather but can only use belt feed guns. must sit at ammo creates for a short time to link belts together. they can no longer carry supply crates but stims to help shrug off suppression . with perks to help and give better suppression.

I think by making these field specs it would make more interconnected and feel like people are in a war and learning what works and what doesn't. like have the main field specs ones sound like an M.O.Ss well the cross more informal but still formal while lastly danger be absolute military humor. at the end of the day they do have to have a downside to make people go should i pick it or pass as they are not suppose to be "safe" to pick. i got plenty of more but those are just my thoughts.