What a confusing and frustrating case this is.
Most of us question the decision to leave the kids alone, have concerns about what appears to be a very odd publicity campaign, believe the McCanns do not come across as particularly likeable individuals, and can't quite get our heads around their behaviour since 3 May. However, none of that necessarily means they are guilty! All of us must recall cases where a relative makes an impassioned appeal to find out what has happened to his (generally it's a he) girlfriend, wife, daughter, partner, etc, shedding tears, acting as one would 'expect' a grieving relative to behave, only for him later to be found to have been guilty of the victim's murder/manslaughter. So I wouldn't put much weight on body language or behaviour (although it is interesting to speculate). It ain't going to stand up in court, for sure. At least I'm not aware of anyone being convicted on the basis that they didn't seem to cry enough for the victim.
So that aside, the big problem for me is the timeline and how they could possibly have disposed of the body. The time leaves little room for planning, cover up, agreeing a story. The forensics, if indeed there is any truth in the 'DNA PROVES Madeleine's body was in the boot' makes no sense to me at all. Even if they had killed her, then concealed the body, the only way of getting such apparently convincing evidence in the car is
they had access to the car at the time (and I'm not clear who exactly had the hire car on 3 May etc) or they moved her body 25 days later, in an advanced state of decomposition, which just seems ridiculous to me, given the media furore surrounding the McCanns at the time. If the story about PJ playing down the significance of the DNA in the car is accurate, I'd expect the traces to have been through transference only.
I don't really want to criticise the PJ but it does strike me as odd that they are still REPORTEDLY talking about seizing the hire car, and seizing potential items of evidence such as CuddleCat, three months on. When all such items have been thoroughly contaminated. Very odd (and perhaps just media nonsense).
Sorry for ramble.