This actually a somewhat common problem for "performance cars" since the dawn of time.
Manufacturers try to use as many common parts up and down the model line as possible. From using the same engines and transmissions and unibodies for a whole range of vehicles. The trans in my Tahoe is out of a passenger car and of course failed when it got pounded on a little.
Ford cant really just "raise the price" an extra $500 either. They have price points in the market class they have to stay under and still build the car and make a profit. If you can save $200 per trans on 30,000 cars a year thats $6 million off your yearly bottom line.
Give Ford a little time here. I've always said you never want to buy "the first" of anything. I think Ford has a few design, vehicle assembly procedure and vendor issues to work out, but they will .... eventually. I knew of trans problems and still bought one, but this is also not my only means of transportation.