This is a thread for UA Insider.
Also, have you tried Tweeting United? Going to the media? (The news love this sort of stuff!) Contacting UA's board members? Any of those may be more effective than posting here.
And don't forget to see if anyone associated with your non-profit has influence. If someone on the board of your non-profit has a day job that involves managing travel for a Fortune 500 Company, for example, that's a great avenue to apply pressure.