I think the cutoff date for scans should be drastically reduced. If it is out of print and not being offered online, every issue should be allowed if it is a magazine even if it stopped publishing recently. The same goes for strategy guides if it is currently not available for sale from the publisher.
Obviously current issue of currently publishing magazine probably isn't the best idea for the sites future as you said, but are your thoughts on hosting back issues?
Anyway, these are just suggestions.