Really? Sorry I'm jumping all over the place. I've only really read Prometheus in Simone's run of Birds of Prey. I can't remember if he fought Deathstroke there - I know Deathstroke was involved around that time.
Agreed that he's a ridiculous plot device. Ugh. (Though he's basically evil Midnighter. Maybe I just don't mind ridiculous plot devices when they're on the good side? Have to think about that. ).