The kid mesh bodies work like the adult mesh bodies. You can make your head any size. It takes a lot of tweaking to the SL head to make it look proportioned to a short mesh avie is all.
I love the Loki mesh body as much as the TD one, but I think most TDs wouldn't since it doesn't allow you to be quite as small as the smallest TD body. Plus, as you mentioned in your blog, you're limited to
only Loki clothing. Before I switched to TD I used to wear primarily Loki, and wish I still could, but he doesn't offer enough of it for me to switch to his av.
Caesey: Hi Caesey, there is a clickable alpha layer option to hide the part of the mesh body like your feet. If you do ctrl+alt+T you will see an invi prim behind the left foot for this option.