I cant believe i'm saying this, but that's not a terrible idea.... When Faith Brown did the 1st tour, she hadnt been heard of for years and it still did well. Jane Macdonald, with some extensive acting lessons, could be ok. I'd go!
Earl Carpenter did a podcast a few years back (he was Joe in the 2001 tour)... let's just say Faith Brown wasn't adored by her colleagues. She was meant to be great at being a washed up has-been, make of that what you will.