Sorry kids, it's a no-go according to Playbill.com.
The reason that there was never an award for replacements is because in the days when Broadway was your only career and shows didn't run a vulgar decade and a half, there were no replacements save the last few months of a run or something.
But very rarely would a star leave their vehicle for Hollywood or just because their contract was up. Often they might stay the entire run, maybe taking a vacation or some time off. Ethel Merman always stayed the entire run of her shows and in addition never missed a performance. Alfred Drakes, John Raitt, Gwen Verdon, Mary Martin, Chita Rivera, and others would normally stay the majority of their shows run and then leave when their next show was ready to go up, while their former show winded down.
Now, since ever person in theatre stays their eight-month contract and then rushes to the other coast like a stampede, we have become accostumed to replacements and don't think them eventful at all.
And in a time when there was such a wealth of rich material on Broadway it didn't seem necessary to honor replacements because most of the top talent was already on Broadway in an original cast.
Now, since good material is seriously waning and shows run forever and a day, it might take five years to get to originate a role in a Broadway muscial, which is absolutely ridiculous. So big stars, not wanting to have to go through the whole proccedings, replace other stars.
It's quick, easy, two weeks rehearsal and a two month run.
I just think that implementing this category would be the final say that there is nothing good that opens on Broadway and that we need to honor TV stars who "slum" it by doing Broadway with some sort of reward.
That's just stupid.
Article on Playbill