You obviously put a lot of thought into this and I would be happy to discuss it with you.
However, the question no one can answer, should be asked here:
Do we need snipers in coh?
We don't "need" snipers, but if there's an opportunity for us to include a unit that works well in combination with other units rewarding a diverse troop composition then i don't see why having that extra unit would be bad.
To me, the answer is no. But Reco squad such OKW Jaegers or USF Pathinders have their place in the gameplay.
The only thing I would keep from the proposal is making sniper only being able to snipe models below a certain % of life. The suppression proposal smell OP, remembering me old kubel.
The idea of the change is actually to remove snipers ability to do tons of attritional damage, but still give them a good role to play. This is why I thought snipers should not get guaranteed kills on units outside of garrisons.
As for the kubel comparison.
My suggestion is that snipers only cause 4 seconds of temporary suppression. Snipers have almost 10 second reload between shots, so the suppression will wear off well before the sniper gets to fire again.
Also, snipers don't move as fast as kubels, and are far more susceptible to small arms.