Broadway Flash said: "My choice would be Stephen Colbert, he's on CBS and it'san election year. He would be absolutely perfect, I don't know why he hasn't done it yet. I also like the idea of Billy Porter, John Mulaney, and Lin Manuel, Tiny Fey, Rachel Bloom, and Kathy Griffin. I feel like they should also bring back Neil Patrick Harris at some point or even Rosie O'Donnell."
You seem to think that all of these people are simply waiting for the call. Perhaps, like some others here, you think this is just a show up kinda gig; it is not: it is a LOT of work and of course for anyone not NY-based, a lot of time away from home/work. Being Colbert, as an example, is a more than full-time job. And hosting an awards show is also a job that has a relatively high risk of failure.