The problem with a revival FG is that the show MUST have a spectacular Fanny or it will be a flop. It is a flawed musical that bogs down in the second act. It needs some work (add another fun number and eliminate one of Who Are You Now or The Music That Makes Me Dance...two good / excellent songs, but in too much the same vein (downer), which could improve its chances for success. But the make or break issue is the lead, who unfortunately will be compared to Streisand in the movie and on the OCR.
Personally, I would really like to see a well-done revival -- I have not seen it live since 1965; I am just not optimistic. Would Love to see Mame and CZJ sounds like a good choice, sophisticated, glamorous, acceptable singing voice, should be able to dance it (if non-dancer Lansbury did it the revival (in her mid-to-late 50s, dancer CZJ should be up to the task.
Re Me and My Girl, I loved it when I saw it 3 times with Robert Lindsey. I have to say, however, that the same issue exists as with FG, even more so. The show is not that famous, the score really is mediocre. It was a hit because of Mike Ockrent's staging, its emphasis on comedy, and Robert Lindsey's glorious performance. He did not win the Tony because the two Les Mis actors split the vote; he won it because he was more critical to the success of that show than they were to theirs, and his performance was just incredibly entertaining, endearing, energetic...and sexy. If they can not come up with someone to live up to Linsdey, they should not even bother. (nd I have to admit that I wonder whether its success at the time was also one of good timing).