We could have five motorcycle / scooter parking spots with something to lock it to in the place of one parking spot or a zipcar spot. Bike lanes can be enlarged slightly to allow for motorcycles + scooters easier (since they are now already shared whether they like it or not). Buildings can allocate a space off the sidewalk for parking. Lane splitting could be legalized at stops at least.

Doing all that and more would increase the interest in two wheeled vehicles for people who could use them and free up more space for the rest. It's not a zero sum game - sometimes things can benefit different groups of people. We think too much that if someone has something we dont have that means we are losing out. Not always the case.,