Medics weren't allowed to carry weapons at all, and it was considered a breach of the Geneva convention to kill one deliberately.
If EA were to stick to that then no one would play medics anyway.
They'd be entirely useful in clan matches and organised games but not on public servers.
MoH isn't classed based, as no one has any skills. Each player is the same besides their weapon.
I don't think the game would suffer at all if they completely removed the health packs. They are the single most unrealistic aspect of the game and you'd not even need a realism mod if you removed them.
CS doesn't have any method of regeneration and it worked fine.
I personally think med packs are the main culprit for quake-style game-play. You can risk running into enemy territory with the knowledge that you can heal yourself as you go.
So called realism mods should limit the amount you get healed down to around 10%. You could classify them as bandages to stop bleeding, or morphene shots to null the pain.
But to eradicate your wounds up to 50% is nothing short of arcade, which in effect answers your question about why Medics aren't included.
It's primarilly an arcade shooter.
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