Where can I find more Brood War scenarios?
Sadly the answer is no. After talking with some hardcore Starcraft Board Game people, and a FFG crew member, I have come to the conclusion that noone (as of yet) have made a collection or site with Starcraft scenarios.

They really hoped for more scenarios, but most fans called that the possibilities were too limited.

I was able to find a few scenarios on this lovely list, but it's not exacly a collection.

If you are feeling creative, Im sure the community would love a site about this.

BoardGameGeek : StarCraft Brood Wars scenarios, variations and maps