$$$$ ---> oh yeah, for sure, totally agree -- new shuttle, new technology, new all-kinds-of-stuff.
Not sure what the actual cost would be to start this thing up (staggering for sure), but if successful, the long term outlook...well, it would replace OPEC and give us the keys to the world commercial energy production. Dollar-wise, maybe hundreds-of-billions short-term in exchange for hundreds-of-trillions long-term:
$$$,$$$,$$$,$$$ ---> input
$$$,$$$,$$$,$$$,$$$ ---> output
Classic risk vs reward.
Not to mention, we would have a really cool lunar-base
A shame that as a country, our leadership has decided to abandon a meaningful space program.
If Japan is able to pull-off something like this, they would be the next Saudi Arabia, energy-wise. For that matter, same for China which has an active lunar program.