In the mega game I played last September, 128 stars per player, we all agreed to shift the double production times to something that worked for everyone. We simply had everyone offer a block of time that worked best for them, then picked the spot of overlap. We paused the game for about 6 hours, then let it run with the new times. Worked out for everyone.
The person we tried to accommodate the most was the final player to join. He had said he typically picks the last spot so that he could pick the time that he wanted Production to be. Since we were moving the time away from that, we wanted to make sure he wasn’t getting really screwed over.