Re: Eddie/Hels
You're guilt tripping a poor, well-meaning Kryptonian to give up everything so you can have your girl back. And, look. I'd probably do the same thing in your shoes, but if Stephanie ever found out that I zapped a universe for her she'd never let me forget it.
Here's what'll happen if you turn the machine on. I'm made up of a couple different Riddlers, so who the hell knows where I'm going to end up. Stephanie? Stephanie doesn't exist anymore because the continuity she's from is erased. Bruce would lose the only family he has. Your brothers would get split up. The rogues would get scrambled. Selina would have to go to that hellhole Gotham she's always telling me about. And, who knows what else?