I agree, overnights would be great. I wouldn't ever have to turn on the old Zenith 8 transistor AM radio on anymore. Even though it sounds great.
Phil Hendrie has recently returned his show to a comedy format, and listeners couldn't be happier. Phil's show was a part of XM during his time at Premiere Radio, but left the satellite airwaves after his initial retirement, and hasn't returned since. XM listeners would love to hear him back, and I'm sure Sirius listeners would too, as there is little live overnight programming on Sirius. Phil is admired by many talk radio hosts including Mark Levin, Rush Limbaugh, and Howard Stern. Sirius XM Stars Too would be the best place on Sirius XM for his show. Overnights on that channel are currently reruns.
Phil's show is syndicated by Talk Radio Network FM, and is available for free to affiliates under a barter basis, with 4 network minutes, and I believe 12:10 local minutes. It runs from 1 AM to 4 AM Eastern time, 10 PM to 1 AM Pacific time, and refeeds for another two hours.