I know what I would do for peace of mind.... If the transmission fluid was at all discoloured or smelt a little burnt????? I would drop the transmission pan and have a look for debris in the filter or bottom of the pan...
Mind you mine was an older one than my current 2003, but my 93 F-350 with the E4OD transmission burned the reverse clutch pack out. Without me knowing they plugged up the transmission cooler with debris somehow, and filter, and the transmission munched itself in short order... I am smarter now on those transmissions having built another with a heavy duty towing pack, and had another spare besides that I played with as Ford was not in Australia at the time and spare trannys were VERY scarce.... Anyways, if the transmission fluid is discoloured, or does not smell sweet, I would want to know what the filter was like and if anything was in the pan. The Reverse clutch packs were the weakest in previous model...!
Regards, Lone Ranger in Oz...