1) When you publicize being interested in improving something, you’ll attract people who share that interest. But an interest doesn’t necessarily mean they are able to contribute. Often for good reasons. Pick co-conspirators wisely. Respect choices.
Make a point of really, really listening. Find the true common ground.
It is, but you make it that much easier to poke holes in the cause — “oh, this is all about X”. Shoot for something distributed, resilient, and hard to pin down
Early on you are just feeling out the situation. Reply All != safe. 1:1 coffee = safe. “Oh it is just a report of all of our past product decisions” != safe. “I’m curious about” = safe. “Here is a book on firing all managers” != safe.
Try to reframe.