Can we cut the Magneto stuff? I'm also not very fond of the Mercy/Lex thing either - it seems a little tad unsophisticated for Lex.
Your Lex reads a little too "Mwahaha!" evil. Too Norman Osborn in Dark Avengers. I'm not sure whether you ever read it but I think Lex at this stage is more Helmut Zemo in the Thunderbolts. He's been funding the world's premier super team for several years and whilst it began as a ploy to spite Superman there's a part of him that is beginning to enjoy the adulation. Rubbing shoulders with Captain America has rubbed off on him more than he'd like.
Ultimately he's still Lex and when push comes to shove he's still going to be the same old Lex. But... don't be afraid to have a little fun with him being in charge of the JLA. A little uncertainty is a good thing.
Well I mean, Lex IS a bad guy. He is the bad guy that everyone thinks is a good guy, sure he is leading the Justice League but he is Lex Luthor. He's doing it to further his agenda. I can dial it down some I guess but I'm not going to play Lex as a good guy or a "misunderstood" business man. He's selfish and doing what he thinks will further grow his power, that's who he is. I plan to have all his criminal stuff blow up in his face, lose the Justice League, go full evil, truly try to redeem himself and become a better person, fall back into old habits. I don't want him to be bleeding heart redemption story yet when he hasn't been beaten into that or have a life changing experience for that to happen.
I know I'm just a player, but my opinion of the whole "Lex secretly is behind the MRA and Kelly didn't come up with it himself" bothers me. It kind of takes away Kelly's political climate and tries too hard to make Lex behind everything morally unscrupulous. Not a fan.
That was really more of a "hey maybe we should do something about these mutants" thing than a "here is my plan on getting rid of these people, you should do it or I murder your family" thing. Maybe the bullet point history didn't convey that well.