The major concern in the OP seems to be left turns hitting pedestrians. Eliminating the left turn over the crosswalk removes this problem. I would argue left tu

The major concern in the OP seems to be left turns hitting pedestrians. Eliminating the left turn over the crosswalk removes this problem. I would argue left turns to cross over the median aren't crossing oncoming traffic, they're merging into traffic going the same direction. Dedicated left turn light phases solve the problem too, but there's a cost to intersection throughput since there's an additional light phase (during which only left-turners on one axis can move). There are certainly a lot of trade offs to be made here with regards to space, cost, and safety.