If the idea of a variation on the Maron/WTF formula is appealing, or if you like the idea of WTF but don't care for Maron himself, you might want to check out You Made It Weird with Pete Holmes. It's consciously modeled on WTF, but Holmes has a more earnest and manic energy. And because of Holmes's religious background (I don't know the whole story, but it seems he used to be very religious and now is a bit more skeptical), there's lots of thoughtful discussion of religion by both believers and non-believers. I just started downloading episodes at random based on the guests and I'm on-board so far.