There is fundation to this: Marines are humans. Retarded conscripts. They are literally XXII century Zoomers, screaming such shit is in the range of possibility. Benos are in magical "hivemind" and all of their stupid rules have to be enforced, not only for the adventage, but disadventage (however I have yet to see one disadventage to gameplay because you are not allowed to do Very Low RP shit).
At this point there is no chance to put any RP into either side. And I'm not saying "Revive" on purpose, because there was never RP, not from the start, not during Apop era, not now, during Neo-Apop era.
All that is left to create semi-metabuddies where you know someone wants to RP and is willing to put his own Gameplay down a bit in favour of RP. Distance yourself from others, keep those guys close. The only solution that would easly work in current state.
Other solution is to simply heavly reduce, or outright remove benos and replace them with Humans, Zombies, Wendigos, Preds, new Aliens, etc.
Either this, or LRP all the way.