I think lightning nades or trip mines are the best. An sorry but smoke and shoulder charge are better. Smoke disables abilities slows you and damages you. Can also be on demand invisibility. And shoulder charge has great mobility options can trigger health regen and has the potential to one hit supers. The shield is overrated. If it saved you from a shotgun death maybe. But it doesn't. And the dot on the melee is largely situational. Since if your close enough to melee you'd probably shoot them to death right after the melee. At best it's maybe a kill from the grave.