Once the center hub opens back up, I think that should help improve things massively not only in terms of the walls being down, but lighting as well. Electric Umbrella (or whatever it will be called) and Mouse Gear will shed a lot of light simply from their respective locations onto the main pathways again. Eventually, there's supposed to be a new flagship Starbucks that will be built somewhere as well. Unfortunately, it likely won't be until either GotG or Play! are opened, leaving that corner of the park dead for another year.
WS however has always been rather dim at night, though i'd argue atmospherically it works out there. In Future World, the lack of light and things to do right now is really quite depressing.