If your concern is unclipping at a stop, I'm not sure that other pedal systems are going to help much.

Unclipping is a twist, an outward kick of the ankle. If it feels like it takes very much force to get out, loosen the tension screw on the pedal until you can unclip easily.

Think about stopping like using the clutch on a car with a manual transmission: you disengage in anticipation of the stop. Whatever foot you like to put down, unclip it before stopping and, as spend the last bits of slowing down preparing to stand on the ground.
Maybe try standing with one pedal clipped in, butt out of the saddle, with your hands on the brake hoods as you come to a stop.