See The Pledges & Investing
TL;DR - no single priority would select a fair number
I like the idea of weighted raffle (extra chances if joined earlier, invited friends, active in community etc). But that is rather technical, random raffle is simple.
I think this thread should be locked once the new info blog entry is out. The lottery is over and it draws the line.
Also I’ve seen Monzo take on feedback elsewhere, but it’s too soon to react to this without having all the information. There was a poll beforehand about how investments should be run, it was 50/50.