I refuse to drive a 3 row vehicle just because of the kids. If we all want to go somewhere, we take my wife's 5 (she doesn't mind larger vehicles). I've stuffed 3 adults and 2 kids in child seats into my mazda2 on multiple occasions, and if I had drive 3 kids around instead of 2 I'd still have the two. Better on gas, and does well at auto-x.
Back on topic:
I installed a 2" antenna from torque solution ($10 on ebay) and now the antenna comes up to just below the roof rack and is out of the way. As a bonus the OEM antenna from the 5 is now on my 2 (replaces the insanely long wobbly antenna that came stock).