Chris Belcher described a payout construction for P2Pool back in the day that allowed P2Pool to scale. There was a problem, the construction required a central hub. Wth FROST we can replace the centralised hub with a federation. That was an intuition I had for almost a year now. I finally found the time and I think I have it figured out. Will share something soon.

Meanwhile here's Belcher's construction: https://bitcointalk.org/index.php?topic=2135429.0