Actually, as neat as it is to imagine what that would be like....and belive me I am imagining some awesome things relating to it.
I have absolutely zero faith that planet landings will be anything more than yet another instance with yet another generic landing pad. Pretty much like landing on an outpost, only they'll color the sky blue, yellow, orange, whatever. And I wouldn't expect the flight model to be very interesting either. It would be awesome to have real simulated aero physics, akin to the il2 series, but I can't imagine it will be any different than flying in space - just with a roar of wind noise.
I have to agree with this, I think it will be pointless eye candy that has no impact on gameplay whatsoever, but hey I suppose it's easier than adding meaningful content.