It would be of interest to me but it boils down to cost. I have an FAA ATP and an EASA ATPL. I also have the 737 on my EASA license but not on my FAA ATP.
I have thousands of hours PIC on the 737 and would be interested in a checkride to get the Aircraft on my FAA certificate. The problem I have encountered is it appears the training establishments such as Pan Am want you to do a full type rating. Maybe you know different?