Review should have same render options as Finalize
From JeffK: I feel strongly that the Review tab should support creating a watermarked file that is the exact same output sizes as the Finalize tab. That’s the only way for me to know for sure that the settings and alignment are all correct before I pay Memento the export fee.
We've implemented this feature in the 1.2 release. There is now an option to make client-friendly proofing (to trim size) and printer-test friendly proofs (with crop marks & bleed). Great suggestion!