Changes I would have considered in the design stage:
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smaller rear seat headrests ...... they are simply too big ..... (ditto for the front ones) ..... small rear seat headrests that 'fold' down would be been better ....
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move the rear seats forward 2-4 inches ...... they did not appear to devote a whole lot of time to this area ....
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increase length of doors - maybe an inch or so - to increase entry/exit (area) into the rear seat area ...
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I also might have 'lowered' the spare tire hump one inch or so .... and maybe taken a tad out of the side (roof) pillars ............
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