Today’s invention is part of my relentless quest to get people onto and off airliners more quickly.
In my experience, much of the delay is to do with people accessing overhead lockers whilst standing in the aisle(s).
So instead, why not have a locker placed above each seat (shown in red)? (These might have extra movie screens embedded in their back faces).
The lockers would not be accessible from the aisle. You could only put stuff in a locker when you are standing in front of (or preferably on) your own seat.
That would minimise queueing, if not eradicate it entirely.
People on the outside might not get the same volume of locker, but at least that would be known about in advance, when choosing a window seat.