Heavies have concussive grenades. Light assaults have flashbangs and smoke. Infiltrator have EMPs. Medics have revive and heal grenades. Engineers have an improved frag. Maybe we can get something that emphasizes the engineer's defensive role like a damage over time AOE grenade. Call it a gas or incendiary grenade to make it lore friendly. Don't get me wrong, I luvs my stickies. I'm actually working on auraxing them right now and they're a blast (no pun intended) to play around with, but it's sad that when the squad prepares to breach and all the other classes throw in their tactical grenades and all you have is a glorified frag.