You may end up with something that can not fly far, can not fly high, can not carry a big payload, can not dog-fight, has an insane maintenance requirement and may, or may not be invisible. No plane can be invisible by definition. It may or may not be invisible on specific radars. The F-35 was not build to fight Iraq or Iran. I was build to fight China or Russia. This makes it a big bet.
You may end up with something that can not fly far, can not fly high, can not carry a big payload, can not dog-fight, has an insane maintenance requirement and may, or may not be invisible. No plane can be invisible by definition. It may or may not be invisible on specific radars. The F-35 was not build to fight Iraq or Iran. I was build to fight China or Russia. This makes it a big bet.
As far as I know "Superiority" is required reading in MIT Engineering programs: https://en.wikipedia.org/wiki/Superiority_(short_story)