Main Street will be redone in the next few years. There has been far too little attention and interest in what might be done.
Ideas range from the practical cement and curb to closing down the street to all vehicles except buses, cabs, and emergency vehicles (much like Madison's State St.).
One of the most exciting events downtown happened last fall during the Gallery Walk. The Running of the Goats, the student drinkfest, was called off but the gendarmes didn't get the message. The gendarmes were out in force ($$$) walking in pairs ($$$) and had blockaded ($$$) Main Street from the New Moon Cafe to Church St. Note that groups of students had scheduled bar-hopping events before which coincided with the Gallery Walk and there had been no problems.
The students canceled, the gendarmes spent a lot of taxpayer's $$$ needlessly, but the fun part was the street was blocked off. There was expertly done street theater happening downtown. My companion noted that a fellow on very high stilts and a very elaborate costume was far too good to be an amateur. She said it was as good as Cirque du Soleil. I agreed. The next day's Northwestern proved that right. It was Cirque du Soleil doing an impromptu show for the Gallery Walk.
We don't need all the $$$ gendarmes $$$ downtown, but YES: Close Main Street for the Gallery Walk.