I think CB missed the part about there is now only 1 turn lane at the end of the block.
He is right about the new lanes almost forces VC or sidewalk, at least from a red light start.

Myself , after looking at Big Leb's pic, I now think the OLD set-up is FAR FAR better, but a bit slower of course.
It actually does use the sidewalk to cut across (at a better 90 degree angle) those now 1 lane each exit + entrance lanes with the island safe zone inbetween.
I think that the vast majority of cars that would enter that roundabout lane will come straight thru the light with the bike flow. If the bike is stopped at the light and is already to the left of the turn lane, then it should be NO problem riding
along the curb lane setup. By the time the bike gets to the end of the next block, the cars would be already by the bike, while the light is turning red again. So it should be not a major problem to cross on the curve and then see about what is comming from the right. Those cars would be thinking it's free flow and stomping on the gas while not neccessarily seeing the bikes now going full speed on the new lane at the top of the island.

The new way forces 3 MAJORLY very dangerous merge crossovers in short order. There is no safe zone anywhere there.
Cars almost always will yeild to bikes, in that second corner/ island situation, here. Clear sailing for us.