I totally agree about those have said above! I think having it as a sandbox would be the best ption!
Also... maybe this is JUST me... but something more 3D than 2D would be cool. But then again, it wouldn't be petz compatible then, which I need!!! & I think the petz and babyz should actually interact have a whole new set of interactions as well!
I wonder if they would have changed anything about how the babyz looked. There aren't many differences between the pets in Petz 4 and Petz 5 so maybe they wouldn't have, but it's fun to imagine what they might have changed. Maybe they would have made the head shapes different or too more time making sure they were all unique and different. Like, maybe one baby could have a slightly larger nose or bigger hands or something like that. I don't know if they would have changed the overall look, but adding some variety would have been fun.
I don't really want a change in what they look like, they are too cute! My wishes are for it to merge with petz 4, lift the color, line, etc. limits in both games, be backwards compatible, and mainly add a lot of new updates to the AI of both the babyz and petz. I'd like to see them learn a lot more, I'd like all sorts of new interactions to be possible between pet-owner, baby-pet, baby-parent and of course baby-baby and pet-pet. More things to do with both of them without getting rid of the open sandbox feel (just, a lot more optional care and play activities) and a little upgrade of petz 4 and babyz to contain the best features of petz 5 (the profiles with all the options there, day-night and weather, litters, etc.)