I think that it would be a neat if breeders could track and show the eggs that they have incubating, this could show information like the incubation length, estimated hatch date, parents, and genetics. It would also be nice if you could follow clutches and/or a specific pairing, which would allow you to be notified when those eggs hatch, or are listed! I think that I would be a helpful tool for some breeders to keep track of their eggs, and also I nice way to keep potential customers updated on what’s incubating!
Long time ago there were live streams of eggs incubating as well as gravid live bearers. I remember many times watching clutches and chatting with friends via aim. Was good times. Probably be easier now to set up than it was back then.