As said, it wouldn't be any kind of LFS or anything like that. It's probably be more of a ubuntu/debian remix or something like that. What's wrong with Qimo btw? I ask, because I've been planning on putting it on a 'puter for the kids as they grow a bit older. The oldest one is 3½, so it's soon about time to introduce him to easier kids games etc.
Qimo is great it's just very limited. My kids have had it since they were 3 and the only thing they still play is tux.
unfortunately, when it comes to fun and educational for young kids there is infinitely more stuff for windows. that's why I thought wine would be a big plus.
Qimo is just Ubuntu by the way. With the kids dock and some very old games. I just think someone with talent could do better and like I said it's a niche that would be noticed in the linux world.
another good alternative would be something aimed at the elderly. There is a neat UI called eldy
but the linux version supposedly made for mint (again just ubuntu customized) sucks.
edit: a huge improvement for qimo would be to have firefox always open in kidzui mode and added to the dock.
I can't recommend kidzui enough.It's great. But with qimo your kid has to be able to find FF and open it in normal (not good for kids on internet) mode.