It's not really peer review though is it? After a theory has been put out there, it's past the review stage.
Science has been and will continue to test Einstein's theory of general relativity hoping to disprove it. I agree with you that it will stand the test of time, in fact all the tests so far have only shown how right he was. More tests under way looking for gravitational waves, whether they find them or not won't affect the Theory. http://www.bbc.co.uk/news/science-environment-34815668
Gravitational waves are nonsense mate. If Newton heard you say that gravity can be present with no mass to create the gravitational field, he'd savage you

He is spinning in his grave right now