so you mean that an individual that counts as support would need to have 2 grunt units + another grunt or elite unit (from anywhere), right?
Anyway, for the medic:
ducal militia medic. (vs another ducal militia or ducal militia medic)
medic level 4, has 1/5 chance to cure, i.e. 20%
for SR and MR, RC is 7. AR is 18. DM is 11.
With a single action you get a 22,75% chance at wounding (thus killing) the opponent, and a 20% chance at curing a wounded model.
So, in fact, even if the medic could try curing the same model as many times as it wants during the same turn, it would be more effective at shooting then at curing.
So, while I might have cured 10 of my men each turn, my opponent, with the same models to start with as me, will have probably killed 11 of my men (and I have killed none because I am using all my actions to cure, that's assuming i could really attempt to cure as many times as I want).
And, i'm not taking in account the extra cost for the medic ability, plus the fact that the medic needs to wast actions to move close to other models to cure.