With the current group system, medics are running around the AO reviving people anyway, rarely moving with their own squads.
Grouping the medics into their own squad like the current pilot group could actually even help, as they could see each others positions more easily and spread out to cover larger area with medical support.
If some arses wanted to steal all the medic slots for their own purposes, they could do so with current system already. I don't see why anyone would though.