It is Overkill, but some people need to build their tactics. One-shot needs to intrigue the players to actually know how the heck they are going to dodge projectiles that are fast. Main purpose of my Brutal Doom mod was kinda based off that. Projectiles were fast, people can't dodge them, and it was heck for slow-paced gamers.
Homing Missiles sounds like a good upgrade for the Armageddon. Maybe for it's upgrade, call it a Stinger Tank Weapon? Still, that could be an alt-fire for an upgrade for the Armageddon. Homing Missiles.
I would also love an upgrade for the Headhunter (or known as the Elephant Hunter, in it's fully upgraded stage).
I have been playing lots of Bulletstorm, and I thought that Rilisoft needs to make it so that we could guide the bullet as an alternate fire. It would be so much fun watching the noobs with this weapon do this all the time:
Especially the explosive ones. And especially the ones that love sniping. Just watch the bullets rain. Wait, that's a minigun. Whoops.
EDIT: I have such an OP mind, yes I do.