Val,
I prefer to wait until you think that B5mod is ready for PBW gaming
I think that most of the B5 races should start out as oxygen/rock types, with a few exceptions.
My reasoning is that most of the B5 races were oxygen breathers in the old TV shows. It wouldn't seem right to be able to habitable any gas, or ice and rock planet. With all that hard effort that you put into this mod, I think we should play it as close to possible like it was portrayed in the TV series.
One B5mod player opinion
Lighthorse
