There's another benefit to MaxPass that I didn't realize until this week: your FP automatically converts to a Multi-Experience pass if the ride goes down during your window. This is true even if you don't realize that the ride went down. It's true even if you didn't make it over to the ride during your return window. It's true even if you decided that you might not ride that ride afterall... as long as you didn't return the FP... if the ride went down, then the conversion is automatic and you can see it in your "My Plans" section of the app.
On Thursday, this allowed us to revise our plan slightly... we were on California Screamin, prepared to head over to RSR to use our FP during the last 20 minutes of the window. But as we were standing in line for Screamin, I saw that our FP had converted... and sure enough, RSR had gone down (probably for only 10-15 minutes). Instead of rushing over there to get in our window, we went to eat instead, knowing that we could return later.
Maybe not a major perk... but under the old system, we might not have known that the ride had been down.