I have quite a bit to say on the issue in general
but to keep it brief:
We might be acting somewhat nieve with how intense we are going on the scans, but i dont necessarily think that puts us at any heightened risk for the board itself.
To the best of my knowledge, major comic book publishers arent in the busniuss of attacking their own fansites for hosting their images, meaning, they probably dont employ people to go out and look for/infiltrate people like us, seeing as the primary function of this board is the discussion of comics and not just scans. In some ways it may be more negative for a major company to attack a forum like this as it is attacking its most devoted fans (many of who still buy lots of comics). This is also supported by the reletive nieche market that comics sell to and the fact that the comic pirating phenomina is rather new in the public consiousness and really only accessable to a few.
On the flip, I'll be very honest, threads like "civil war scans" may be calling a bit of attention to ourselves, and the fact that scanning is not simply limited to events, but branching out into general titles, may also be slightly overzealous. And while the idea of a directory may be nice, it would also implicate the permissiveness of the site owners themselves (who are legally responsable should Marvel or whoever wish to press legal action) rather than a bunch of people who they could say are opperating under the radar so to speak.
However, the likelyhood of any of these things catching the attention of a company is, imho, unlikely, for the above reasons, and in a situation like ours, it might be impossible to enforce without a blanket prohibition of the use of copyprotected material for fansites and forums. Even avatar and sig images would violate the same copyright laws that posting issue scans would. To be honest, the laws on the books dont really take into account the change in technology, not that i think they should be changed to allow piracy, its just ridiculously complicated when it comes to matters like this.