The versitility of an Offensive medic is really unparalleled but only if you can do a HH conc jump at least 90% of the time. I would recommend trying to play the conc jumping maps if you intedned to ...
If you play sniper.
If you are a sniper who takes the grenade bag.
If you take all the bags.
If you don't know what the rr, fr, or choke points are.
If you are infected and stand at choke poin ...