I question your $3k number to
I question your $3k number to provide basically a weatherproof 120v outlet. It should be possible to add 120v outlets at the base of lighting poles at long term parking for very little money. Let's be generous and say $200 each.
It may take 20 hours to recharge a LEAF from a 120v outlet, but that's the whole point, if you leave it overnight in long term parking where's the problem with that? A Tesla S may take multiple days from a 120v outlet, once again, so what?
Fast charging would only be appropriate in short term or kerb side pickup locations. Judging by the L3 charger at Nissan Headquarters in Frankiln TN, exactly one parking space is required to accommodate the vehicle and charger.