Honestly I feel option 4 would be it, but opening shot, targeting mods, firmly planted and maybe even no disctractions still exist. Could not be enough to make it hard enough, given some time for the meta to possibly shift harder towards those perks after base sniping becomes more difficult. Without anything concrete to actually compare to, I'd default to option 3. Snipers should be rewarded for positioning, predicting opponents and catching them off guard at obnoxious angles. They should not be viable proper 1v1 weapons, because with enough practise they have no realistic range limitations. Close or far. In short I feel flinch should be there to signal that when you're being shot, your window to snipe the head has closed. Completely. That's how I feel about it at least. As PC player who's more often than not forced to snipe even in quickplay these days for a comfortable experience, since they're just so oppressive weapons on MnKB because there's so many tools making hitboxes barn doors in this game.