I understand why we're part of the program, but the subnetting of testers is unnecessary and creates twice the workload.
As for providing feedback, that is the other thing they've subnetted. We now have 2 different apps, one for registration which has had all the features removed, and a second dashboard app which gives you "quests", change logs and ways to submit feedback straight from the console. Not everyone in the preview has access to the latter. Microsoft have forgotten how to beta Just let anyone who wants to take part download it, and put them on the same build. These variables make for a terrible test environment.
Usually when you run an experiment you split your test group up to hit different variable combinations. You make progress faster, especially when your pool is massive. Quite frankly it seems more like you don't know how to beta if this is what you're complaining about.