Some sailplanes have a provision for that. Engaging -7 to +10 flaps is fwd/aft. Then you move the lever left and you can engage +10 to landing setting. Going from landing to negative (cruise) requires moving fwd, moving right and moving fwd again. Pretty much fool-proof and there's no added complexity to the flap (lever).Agree, I like the old "Johnson bar" flap lever. Only negatives are that the student is able to go to zero flaps instantly when it may not be safe to do so, and also the failure if the ratcheting latch mechanism may also allow the flaps to go to zero unexpectedly.