For CTs and ROs:
Engineer skill like normal engineers, bizarre how they can construct standard cades but not plastisteel
Medical skill so they can give medical supplies if needed
A medical vendor in Requisitions
Medical comms key in the Req autolathe
No more delay when putting magazines into boxes
Being able to construct crates from wood
Having some degree of control over the randomized ASRS ordering, so you don't get six Flare Mortar shell crates in a row
For Medbay:
A medical equipment vendor so you can replace rigs and pouches for medics if they accidentally misclick