bikelanes on the level with the sidewalk which also merge into the crosswalks at intersections. For big intersections with traffic lights you can have under/overpasses for pedstrians and bicycles instead, which also allows more aggressive traffic light cycles for the cars.
I think putting them on level with sidewalks would be a serious danger for pedestrians, moreso than my risk as a biker. I do wish crosswalks were designed so that cyclists can make left turns on them
