I still think "Once" sticks around for the summer. It should still do decent business. Without some kind of "name" for the Fall, there's no way it stays open with grosses below $500K.
A Chorus Line revival played its final Broadway performance on August 17, 2008. The tour played its final performance on August 21, 2011. A new non-equity tour started in October 2012 played its final performance on March 23, 2013. Another non-equity tour launched on January 20, 2018. The tour ended its US run in Kansas City and then toured throughout Japan August & September 2018.