Certain job specific frequencies often go unused

[Oremir]

That is "NORMAL" but in reality there are several medical stations on most stations where you can sit too. Aka medical checkpoints, especially in large stations.
This is so not everyone has to run to medbay...
You also forget the often unused job of EMT. Where someone is patrolling the station and responding to medbay calls, picking someone up and saving their lives then port-a-meding them to medbay if it's TRUELY URGENT! But atleast stablizing them on the spot.

While whenever I am doctor there is mostly only 1 or 2 doctors in medbay (including robotcists) if there is 3 or more... have one of you go to another station or roam. You don't need that much in 1 medbay.

The argument here being? ... because this still isn't convincing me collapsing R and medical is a good idea.