I 100% agree that having motorists merge into the bike lane as they approach their turn is the safest way. It avoids right of way confusion and potential right hooks.
The problem is with part two of the concept, namely that, as with any lane change, one must yield to oncoming traffic already in the lane.
Specifically right turning motorists must yield to cyclists in the bike lane when making that move to the right the same way they'd yield to a car.
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