As a fellow philosopher (who has not been near a philosophy department in a decade), I welcome all of your contributions with great enthusiasm.
I never considered looping through the lens of the philosophy of time, but it seems a very worthwhile line inquiry. I haven't read Kubler or Fraser, but I am familiar with Collingwood's work.
The concept of the repeated now speaks to what is common to Terry Riley's In C and Bill Walker's Sanctuary. Codifying this language may lead to interesting discoveries and I I look forward to your analyses as they may also suggest composition and performance strategies.