No, I wasn't old enough to get into CES twenty years ago, so I've never seen this stuff in action. EGM ran a preview of Swamp Thing from CES (Winter 1990 I think?), which is the only info I've seen on it, and all the Bean Ball Benny info online prior to this thread came from the CES flyer I bought on eBay years ago.

Nuvision only released Bimini Run, but to answer your question yes, they did announce one other game, based on the Guardian Angels. I don't know if any actual work was done on it though.