I never grew up with the Pretenders, as I was only born in 1987, and came in TFs when the show started syndication, and the Classic characters were being released (and a little bit of Action Masters). I even remember seeing another kid at school with a Rodimus Prime and a Blaster, and imagined that they must have had a father who bought it from overseas. (And was rather jealous - the only thing my lousy father brought from overseas was a GameBoy :P)
Anyway, the long story short is that the resulting exposure I have had to the Pretenders has been through their characterisation in the Super God Masterforce cartoon, and the comics.
With that in mind, I'd vote for new interpretations that had the robot mode reflect the shell, and a vehicle mode that reflected the inner robot. Two ways in which this has been done include what we have seen in Bludgeon & Thunderwing. Also, what we saw in the Stormbring comic, where the characters heads reflected their Pretender shell, but the body and vehicle mode reflected the inner robot.