Dear god they whine! The very first thing that occurs in WZ is everyone rushing my damn sniper! There is 2\3 healers in front of me and everyone ignores em and comes after my sniper.
It's called going after the most important targets first. Should be a red flag, honestly.
As I understand it, snipers who have been knocked out of cover by Diversion can simply use their roll to regain cover even if the debuff isn't over. Personally I think this is lame (although it's also lame that you can knock a sniper out of cover with Diversion when he has Entrench running).