[Tomgs]

The only people that I have seen in the community that get upset at something like this is some of the roleplayers. They were not upset at the shipsets but at people that use the shipsets and roleplayed a race from one of the shows that the shipset represented. The reason I believe (maybe they could explain it better I was just lurking through their forum so I don't know for sure) was that anyone could use a B5 shipset and play that race so if multiple people picked the same one there could be confusion and arguments (which had already happened with the multiple people that were Terrans and wanted to use earth as a homeworld). But they didn't mind if someone used the shipset as long as they roleplayed someone different than the race from the show.
But for your own use with the game with single player or your friends no one else (if no copyrights are infringed) has any say about it.