The whole "left guns around" evidence is not compelling to me. It highlights the weakness of SODDI with the family weapons. They are having to walk a fine line of trying to imply a bunch of alternative scenarios and going all in on one alternative. I don't think they are going to commit to just one, but that is just a guess on my part.
They are trying to cut holes in the quilt of evidence, and substitute out different squares here and there, but I think at the end of the day it is still going to look like a quilt.