One other idea that I would have: declare a protest for April, and have each MM member take the purchase of at least one flight that would normally go to United and divert it to another carrier. Then have each member record what they spent on the alternate carrier, and upload it to the website. Also post a review of the experience on the other flight. This shows an immediate financial impact to UA, and makes it clear that the MM have a choice and are willing to use that choice.