I thought it was a solid episode. I don't like Baldwin's Trump as much as some - he seems to fall into his Nixon and Robert Deniro impressions too much during it. I'm glad they hung a lampshade on the racial thing. I don't think it excuses the lack of diversity, but a sketch like this, where they don't have the right actor for a part opens a door for the writers and players to convince Lorne and the others who do the hiring to get some more diversity.
edit: "Tic Tacs- grab bad breath by the pussy" deserves another mention