The F35 was doomed from the start. It was asked to do too many roles, inherently making it the jack of all trades, king of none. The military would have been

The F35 was doomed from the start. It was asked to do too many roles, inherently making it the jack of all trades, king of none. The military would have been much better served by making a few related airframes with as much commonality of parts as practical.