He might be the right pick. I'm interested to see how he does. I love the other hosts, but a lot of them fall into the format of the show too much. It's like punchy section headlines and clear setups and punchlines. The delivery sounds like a talk show host reading a joke from writers if that makes sense.
Jon Stewart was always a master of weaving it all together. Josh Johnson is much more in that camp. His stand up, which he has a new 30-45 minutes every week, is pretty crazy. While it's more rambling than would work on the Daily Show, he does have a good ability to drive the underlying point home in a very unique way.
Might work, might not, but excited to see him get some at-bats.