Now, if we pissed Nintendo off (by doing things like, say, blatantly supporting piracy), then there's a good chance they'll try to shut the site down for no other reason than because we pissed them off.
See, the thing is that hosting printable covers for unreleased and unlicensed games doesn't really enable or even endorse piracy in any way anyhow. Let's face it, most pirates don't care about making their collections look pretty, they just want free stuff. What we do is pretty harmless, I'm pretty sure these companies lawyers and PR departments would see it that way as well.
Like others have said, we're more likely to see the site shut down for the LICENSED covers we host before we'll see them go after the unlicensed ones.
EDIT: and as for skirting copyright laws, nintendo doesn't care, seriously. Ever heard of MFGG? It's a mario fangame website. The games they host have liberal use of copyrighted content, including spirtes, voice samples, etc. not to mention unlicensed use of the characters. The forums were once visted by Charles Martinet (you know, the Mario voice guy) just for casual discussion. Nothing bad ever happened to the place (well other than the community degrading severely, but that's a rant for another day). The fact that Charles Martinet has visited tells me that Nintendo themselves definitely knew about the place, and obviously didn't see any danger going on. That place is obviously skirting copyright way more than us, I imagine if they knew about this site (which they likely do) they wouldn't care about it either.
