That's a huge improvement, IMHO
It's so much more convincing with these pictures of toddlers, and you've chosen a convincing selection (motifs and colors)!
I had always viewed it as something that other people used, but not me.
Same here, by the way, and I still don't like it, in most contexts. But here, I find it absolutely convincing and, as you say,
There definitely are projects that necessitate this type of imagery.
To be honest, the only thing I would still be missing now as a parent is a photo on the about page showing the people that I am entrusting my children with.Edit
: It just occurred to me that stock photography itself with its mostly faked perfection might be one of the reasons for some people not to show their own pictures (apart from privacy reasons, of course, but IMHO that's more of an aspect with websites of individuals). As a parent, I would just expect some friendly faces here (group photo, with no "faked beauty" expectations at all) and find it more convincing than a flower.