Historically sad about the Magic Flyer gone, but ride-wise, even in the kiddie area, always thought it was a bit unusual that they had 4 "kiddie" coasters (I am including the Roller Skater, but even if you don't, it's still 3, which is still quite a few for kiddie coasters).
I am surprised and disappointed about Tweety's Escape getting demoed. That's a classic, and a one-of-a-kind original that's been at the park in some form (it was originally space capsules) since the park opened. You'd think that wouldn't be that hard to relocate, as it is a favorite for parents looking for a unique and humorous photo op.
Five years ago, Theme Park Crazy called it the #1 most bizzare flat ride, and give what little history is known about it (10:31)
UPDATE: Side note, SFMM has updated their app... so if you were like me and couldn't get your ticket to upload, it was now working for me. You may need to update/change your account password, but my digital ticket did upload once I did with the updated version of the app.