Actually, I've been thinking about Hobbit Wars in GB for a while now. I think it would be a really good.
The only thing is you'd start all the ships on the outside of the square. I think it would make it interesting. There would be a different set of tactics used for sure.
(I wouldn't post this is the suggestions thread becaues I'd rather see fixes than new features, but I'd also like to see a "Battle of Midway" map, with Midway island in between the two teams.)