So here's my contribution to the topic. During the winter, the MUPs have been closed to cars driving in to the parking lots. Instead, they park right up to the gates blocking pedestrians and cyclists from going past the gates.
So my fix is to grab two pilons from work being done up the street and place them at the edge of the gates so parked cars give clearance to pedestrians and cyclists to pass.
In another MUP, the exit/entrance leads to a parking lot of a private business. Right of access is given to those who use the MUP. But this winter, plows in the parking lot have piled a mound of snow right in front of the MUP entrance. At the entire parking lot, there's only one pile of snow and it's right there. So this forces cyclists to ride along the parallel street instead of the MUP.