That would be extremely useful. I always thought that the red cross was too small and a bit too transparent to be properly visible amid the fighting. This wouldn't just be great for players wanting to get healed, but also for medics wanting to do more in these events. As someone that enjoys playing as a medic, this would definitely get everyone else's attention to myself, which would result in us medics getting more heals and money. Hopefully making the medic job a bit more popular.
Another thing I just thought of, what about Criminal/Police medics? I know they're not invisible, but I think it would be great to show a marker around them, a marker that would only be visible for their team. Or else we would have the other team easily targeting Criminal/Police medics because they are easily visible due to the marker. Either way, my vote is positive, the medic job does require little improvements like this to make the job as good as it was back in the day.
✓