Hi, thank you for your edits.
One thing: Please don't add kerb nodes at crossings into the sidewalks itself, but separated out on their actual position instead. Adding them in the sidewalk makes everyone routing along the sidewalk route over that kerb, even if he doesn't even intend on leaving the sidewalk. I fixed a few but then relised the sheer amount of them done like that. I would really apprechiate if you could take a look at some or at least map them different in the future. 
Right now it is impossible for wheelchair routing in Phoenix to minimize the amount of kerbs on the route.
Cheers