The Heritage Auctions material in 2010 tells us that he started work on GI Joe The Movie immediately after his second TFTM script. According to Buzz Dixon when he was interviewed in Marvel Age in late 1986, the process went thusly: Ron Friedman wrote an outline, Hasbro didn't like it and with every revision he then did, it just made the problem worse. Then Steve Gerber was brought in off story-editing the main series to try and fix the problem. That didn't work either, so they looked to Buzz, who said "Let's just start over". So the Joe movie was effectively taken away from Friedman. He would be sent drafts and make his revisions, but it was definitely Buzz Dixon's framework.
The My Little Pony movie, there is absolutely zero information on production timeline. But with George Arthur Bloom at the helm, I'm willing to bet things went a little more smoothly.
The Jem movie was a sad tale. By early April 1986, Christy M a r x had submitted a round of premises for the movie, saying to the office she was uncertain of what the overall point and direction of the movie was going to be. Before the Spring was over, she had an outline ready. That outline was never approved as the movie was axed due to low doll sales out of the gate (The series beyond season 1 would probably have been axed if they hadn't already sold a full 65 to syndicators). By early June, she was looking at ways of salvaging as much of the movie ideas and incorporating them into the series as she could.
