We actually ended up doing something like this with the F-111; ruining a generation of Soviet fighter planes (though the Aardvark and Su-24 are pretty good low level bombers). The F-111, you may recall, was the last "do everything, all three service branch" jets we attempted to field.
Prior to the cancellation of Black Arrow, NASA had offered to launch British payloads for free; however, this offer was withdrawn following the decision to cancel Black Arrow
Read somewhere else that they learned from the "jack of all trades master of none" mess and copied a bit more selectively. Still think theirs will be worse though...