With all kinds of Torrent sites popping up EVERY DAY on the Internet for just about anything imaginable, I would think it’s almost virtually impossible for the Dev Team to keep up with them all (Hence the listing of only a few well known ones)
To solve this, I would suggest an ADD SITE feature
With this feature, all one would need to do is simply enter the site name into a wizard just as if they were entering it into a web browser (AKA piratebay.org if one one wanted to add Pirate Bay to their list) & then click an AUTO DETECT SERVER CONFIGURATION button which would provide BitComet the neccessary info. needed to communicate with that site
The user would also a display name to the site which was just added which would be shown in the GUI
Thoughts ??
Cheers 
PC Naughty Boy