I love this idea and I think it would do really well in game. I'll pass along this suggestion to the developers. As you know, there is a good amount of dev time involved in creating new pets, even smaller versions of existing ones, and then there's the creation of the new quest line. The reason I mention this is that our dev team is working hard on some new content right now such as the Public Test Server and Planar Arena, so there's not a whole lot of extra bandwidth at the moment, but I'll definitely make sure it gets on their radar.