Very excellent creative engineering work. Thanks for this!It would only be possible to do this using latch in the middle of course, which has a weight limit. The latches are pretty wide on the outer seats so using them for the middle doesn't put them at a bad angle. First thought might be that this is a safety issue, but based on where the latches are I don't see it as one. Actually if you only had one baby seat to put in, I think putting it in the middle like this would be safer than on either edge.