'World's Finest' (For Now) Announced At Comic-Con For 2015

I think, if done right, it actually does something Marvel HASN'T done yet:

Teams up two MEGA popular characters in the same film.

Now, I don't mean a "team" film like 'Avengers'. 'JLA' comes later. I mean teaming up TWO heavy-hitters together. 'IM2' had Black Widow, but a Superman or Batman she is not. Each 'Avengers' character had a solo film before they all joined together, with S.H.I.E.L.D was the only connection. If well made, two of the 'JLA' members will have actually INTERACTED TOGETHER FIRST. Hell, have Batman's last line be about tracking down other "super people", and consider seeds sewn.

But this film has to be almost perfect. I know Snyder and Goyer are writing, but they NEED input from others on just HOW to go about it. 'MOS' could have used some "polishing", and we DON'T need people saying the same about 'MOS 2/World's Finest/Superman Vs. Batman/Whatever It's Freakin' Superman & Batman'...