I'm on.
Must admit, a mini database is a good idea (years ago i decided to just download every mini i ever look at as a proxy so i can compare them in one big folder) but the problem i think you are going to encounter is that manufacturers are going to be loath to directly associate their creations with anything GW... It would just be a dream to wendy's lawyers.
Instead i think you should just try "by manufacturer" data bases of images. Make sure they add a constant scaling item (ruler?) in every pic. That would be very useful (and save me HD space !

)
While i'm throwing in my 2p. Rules hosting seems unnecessary. All the epic sites are now good an clear (EpicUK, NetEA and Netepic.) Much easier to navigate the epic world than 5 years ago !! Just link to them.
Make your data base (players and minis) your USP. You can't do everything.
Keep up the good work.