Wouldn’t anything sizable enough to make a noticeable difference immediately act like a solar kite and be wisked off into space, L1 or not? They’d have to all have force sources(ionic engines or something) to counteract the force. I wonder how practical something like that would even be on something of that scale. Interesting to think about.
What would happen if we put a giant glass tinted dome over each city?
In this scenario, we aren’t trapped in the dome. There are openings and doors, so we can get out, cycle in fresh air, etc....