On the subject of arenas, there is a really good biography about Pete Maravich. There are a number of them but I believe this one is entitled Pistol.
When he arrived at LSU, hardly anyone came to the games. The arena was decrepit, had multiple leaks in the ceiling, which damaged the floor, horrendous seating, and I believe smelled pretty bad.
Maravich, who as a high schooler would regularly play pickup against the varsity and was by far the best player on the court even then, soon began to fill LSU's arena ON THE FRESHMAN TEAM. His legend grew so quickly that fans would come to the freshman game, which often preceded the varsity game, and then leave before the varsity game.
Guaranteed if we become a ranked team, the place will fill up again, as will MSG. With or without seatbacks.