It COULD be intentional because otherwise I don't think Rhinos are very good at all for our lists. Rhinos move 10 marines 12", vs a bell boy who is letting the marines move 6" while still shooting bolters and blight launchers at 24". Bell boy would also let your melee marines POSSIBLY make a 7 advance for a total 13" move first turn, and while they may not get the charge in, you can bring a FBS with 'em to help nullify your enemies (somewhat likely) charge into them on either turn 1 or turn 2. & i think you can only fit 5 possessed in a rhino (DUMB) sooo yeah.

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I don't really see myself paying for a rhino unless you can indeed let your boys move in the rhino and hop out first turn with how badass inexorable advance is. And if you wanted to move termies up the board you can just deep strike 'em anyways.