The rack actually comes with a tilt feature. While I agree that releasing the front bike is pretty quick too, so is the regular tilt feature that makes it really easy to get into the hatch, though you have to come at the hatch from the side.
The problem with a swing-away rack is that it needs to be so sturdy to support the bikes at an angle from the car that it will get that much heavier to put on and take off. Tilt-away may not have the total access that swing-away might have, but it has it pretty quickly and with a much lighter mechanism.
The 1-Up racks also fold up for easy storage - the arms on which you put the wheels fold 90 degrees towards each other to make a compact rectangular footprint.
This video shows unfolding it, attaching it, loading, and tilting it. Note that he only has a single rack model, but each rack allows 2 single-bike extensions so the single rack can take up to 3 bikes and the dual rack can take up to 4 bikes. With one bike the tilt feature would be as easy to use, if not easier, than releasing a bike, but with 4 bikes loaded up, then it might be less unwieldy to just unlock one bike instead.