Not sure,it would be like,Yamato bombs where its rather making attack AOE but in this case its just makes it one big bullet,maybe even bigger damage,to some considerably fair,even small amount
Also thought of that, because in shooter its kind of should be easier to do such character properly than in regular MOBA.
Also I think for alt fire u actually should be given ability to draw any shape of attack for as long as u want until u have ammo