I actually go special operations doc almost all the time. this is mostly for the infiltration tactics grenade assault you can use. very underrated imo. you can throw up to 5 grenades for just 10 munitions. its very capable of squad wiping and forcing retreats if you land it properly.
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i also use special most of the time. those cheap grenades unlock early and are fantastic.
especially against those large russian weapon crews.
i equip my obers with stg44 whenever i can.
it allows your obers to fire without having to set up and it shreds any form infantery with a good range.
the flares can be usefull but it costs 60 mun. and i usually need my mun for nades, schrecks, stg44 and mines. so i rather get a infra red truck.
i agree on the panther command. very usefull especially in team games.
yesterday i got lucky and got the elite armored commander. so im trying to play with him atm.
though i gotta say im not that much of a fan. the abilites give you hardly any advantage in early game and they cost loads and loads of munition.
the vet p4s are very nice though. with thse there is usually no need to build p4.
they work excellent against infantery and those heat shells allow them to crack even heavy armor.