Alternatives to trusted traveler -- no-longer trusted travelers (no Global Entry) can now use Automated Passport Control, an App for your smart phone, which at Dulles last week, was faster than Global Entry.
I'm not sure if this is the same as "Mobile Passport", but Mobile Passport allows you to complete the kiosk information on your phone and in most airports (IAD/BWI tested) if you tell the usher (non-CBP employee with the airport) that you're doing Mobile Passport, they let you skip to the immigration counter bypassing several long lines.
They seem to be functionally the same, though CBP has different web pages for the two programs.
This was my plan. If GE is no longer an option - let's move to all the other options. I was more worried about losing TSA pre tbh.