I'm going to cut and paste from someone's post on your boards:
"I would love to see Mongoose get the license for the Stephen Brust's Dragaera setting. There is a good amount of base material but there is plenty of room to flesh out the setting with more information on the different houses. It has a wealth of possibilities, from a low magic level (the Intergrim sp?), the moderate magic levels (early Empire), to extremely high magic levels (current/modern Empire). "
All kinds of new races, new magic systems, different eras to play in.....This along with Stargate (which seems written to be a role-playing game) are the only two licenses I'd be likely to buy.
As for non-licenses, since I'm at work, I'll have to think about that and answer later.
Mostly, I want you to keep up the good work.