"Gotham, I'm not sure if you were joking about John Goodman as Alfred Doolittle, but on some level I think that could be brilliant."
Not joking, I think he would be fine. And remember he was in the original Broadway cast of Big River as Pap, so he has done a musical before.
Plus I think it would appeal to Goodman as Doolittle has two songs "With A Little Bit of Luck" and "Get Me To the Church On Time" The character makes a big impression but doesn't have to work his butt off like Higgins and Eliza.
If anyone ever tells you that you put too much Parmesan cheese on your pasta, stop talking to them. You don't need that kind of negativity in your life.