If I recall correctly only an Alpha Bat can make the eggs not crystalize, so MC couldn't have them hatch if he did things himself no matter how badly he wanted to. (Provided we don't get some super-fertility blessing in the future.)Bat Breeder is a best girl. Did Tinkerer have plans to add option to "hatch" some her eggs? Btw we still have 2 empty cells, that about new pets?
New pets wise, I'm not sure what we'll have, but I believe there was some talks about it like 20 pages back.