Only got a few minutes to drop this out there. This is only a proposal, mind you! I want to know what you guys think or can build off.
I think the "war" theme is starting to wear on fans. Civil War, World War Hulk, Silent War, etc. It's getting a little heavy, so I want to try a different tact.
What have we NOT seen the Marvel heroes really go up against? Mother nature. Oh, sure, they've disappated the odd storm, or tidal wave or what have you, but not mother nature IN ALL HER FURY. What if they had to deal with a sudden, literally seismic shift of the tectonic plates? You'd have earthquakes all over, water rushing in where there wasn't any before, possible new volcanos cropping up, old "dormant" volcanos suddenly blowing up, mud slides, rain storms... the works. How do the heroes deal with that unilaterally? How much can Storm do to prevent disasters? What does Spider-Man do during an earthquake in NYC? That's what I'm thinking for a one or two issue "event" - unique title with a solid creative team just showcasing the actual BOOM moment(s).
Then, the tie-ins can be (up to you guys whether you want to tie into it or not, or for how long) how your heroes deal with the immediate aftermath, and perhaps what happens in specific locations. Does California just break away from the US or does it sink into the ocean? What happens to Japan? Do looters/super-villains take advantage of disruptions in security systems -- either at the prisons they're held at, or the banks they try to rob? Does Dr. Doom try to step in and get government contracts to rebuild?
Just a proposal, like I said. Allows for lots of individual flexibility per title; doesn't necessarily pit hero against hero, but could; lots of location possibilities; fairly (IMHO) new idea for the Marvel Universe... but this by no means The Sean Show or anything. If you guys don't like it, or don't think it'd work, we can still look at other options.