It would have been great with Steve and Eydie! They both did comedy later on "Carol Burnett Show", and Eydie sure had the voice for the role. The director would have worked with Gorme on acting the dramatic scenes as much as they needed to with Streisand to get the performance needed. Lawrence was short, but I think the real Arnstein was as well, plus Lawrence around that time did "What Makes Sammy Run" on Broadway which proved he could really act as well. Plus they were both Jewish.