re: What to expect
The age of reusability is over.
And there will be fewer astronauts in space than during the years when the Shuttle was flying.
If NASA wants, testing the vehicles could only require a few test flights in LEO and on the Moon.
Then flying to Mars would be next, but that is an enormous step between 2 or 4 weeks on the Moon and 3 years for Mars!
Maybe an asteroid visit with a one year solar orbit, in the mean time.
Raoul