Having circled the BW Resort parking lot many times, looking for a spot, when we were staying there, I do wish that Disney would charge for parking if not a registered guest there. The restaurants could comp several hours of parking for those with ADRs.
I know the Boardwalk was originally promoted as an after-hours dining and entertainment destination, but the parking lot is too small, especially now that the Skyliner turning station took a big chunk of it. It’s not practical, and guests who book breakfast ADRs so they can leave their cars all day are simply being inconsiderate.