Got back from a week in sunny Orlando yesterday. Was not looking forward to arrival as on a high-J A350 and in 2A, so 40-ish passengers ahead of me from my flight alone in immigration. On landing, I did submit a MPC application, but the App just hung when trying to finalise the submission (can't remember the exact wording, have deleted the screenshot) but it was something like "Finalising submission" with animated graphics moving.
All the GE signage is still there on the signs telling your group letter as you progress towards the immigration hall. When there, the GE kiosks just have "NOT IN USE" notices on them, so directed into the Visitors lane. After about a 5min wait I saw an officer, he took a photo of me and said "you have Global Entry", asked me how much cash I had on me and waved me on my way. He did not even open my passport.
So it would appear that at MCO, a sort of pseudo Global Entry is operating, once you get to the front of the Visitors immigration queue.
Was through immigration, bag-claim & customs faster than it took to sort out the Visitor Toll Pass. The cash lanes on the SR528 between the airport and I-Drive have closed for good. Make sure you have the VTP application downloaded before you travel (I didn't) and set an account up with credit card details linked. You can pre-book your pass so you have the QR code ready to scan at the kiosk to get your VTP. Despite what the App says, you do not have to enter your rental car licence plate into the app - it will "marry-up" with the transponder tag at the first toll you pass through. The VTP charges tolls at the absolute lowest rate too - the old cash toll on SR528 from airport to I-Drive was $3.25 - it's $2.21 each way with VTP.