A "retrograde re-entry" landing autopilot option

Often when entering thick atmospheric planets mechjeb fails to take into account that turning 180 degrees while going 500m/s is not really a viable option.

This option will make it so that mechjeb tries to fly in the rocket in a retrograde orientation.
By flying retrograde the rocket will be "fixed" in it's retrograde position once air drag starts affecting the rocket.

Currently the way to land it in this manner is by first having the landing autopilot set a destination and then switching the landing pilot off and just using smart A.S.S. to keep the rocket in a retrograde orientation. and only switching to a powered descent autopilot at the last possible moment. This new feature would do this automatically.
The tradeoff is that no time acceleration is possible during the entire re-entry procedure.

Another option to deal with this issue could be the "straight down" landing approach, where a rocket first flies to it's target position, just above the planet atmosphere, and then fires retrograde until all orbital velocity has been removed, then it's just a matter of a vertical powered descent from high altitude.