The reason "Game Night/Don't Gooder" was delayed was because its original air date would have caused some minor continuity issues. Bill Motz and Bob Roth then asked if it could be moved to a later date.
I wonder if we'll get to see more of April, May, and June someday. I mean, they've been in Legend Of The Three Caballeros, DuckTales 2017, and had a silent cameo in House Of Mouse. I mean, you can have them show up in Mickey Mouse Funhouse. They're the right age for the demographic.
Craig Gerber is working on another show, this one from Kris Wimberly. Not much is known about it, but it involves a time traveling treasure hunter. If there was at least a title, I would start a thread, but that's not the case.