Medical Doctor should be a time-locked role.

[Kotlol]

I think another problem is that its way faster to attempt to heal yourself than wait for a doctor to figure out whats wrong with you or even notice you're dying, because doctors have as much tunnel vision as geneticists sometimes. I've seen them straight up ignore dying players and then wonder aloud why there is a corpse just lying there.

Happens in RP too, when I get doctor, I am always sitting ready for duty. The more swamped medbay gets in RP, the more I throw into cryo-pods and keep eye on who's treatment is needed more. I think we just simply need to give doctors an edge and more importantly.. more Medical directors that are like HoS's.
Medbay can be as dangerously effective as Security, unless there is an antag in the midst.