I would like to see Squirrel Girl's extremely disappointing blind date, Brad, become a recurring character in Unbeatable Squirrel Girl. Not a primary one, not showing up every issue, but periodically, as a background nuisance.
He doesn't even have to physically appear in the story. Let Doreen and Nancy find a flyer on campus for some meeting he and other superhero truthers are organizing about how fake monsters are designed to keep the public from focusing on income inequality, or the continued watering down of beer. Or she stumbles across message board posts by him. Someone posting they were totally able to grab some girl hero's tail and it didn't come off, it must be real, and Brad replying that costumers have really good glue, bro. Posting images from different creative teams and claiming the changes in looks are behavior are proof it's a different person in the costume, and it's a marketing ploy to trick people into joining the CIA or something.
I originally thought of it as being Squirrel Girl's version of the "Elf with a gun" plotline From The Defenders, but that's not a good comparison. The whole point of the elf was specifically that there was no larger point to it, it was emblematic of random bizarre shit that happens. Whereas I guess Brad would be proof of the human capacity for self-deception. So the better comparison would be that Brad becomes Doreen's J. Jonah Jameson. A constant background irritant she can't handle by any of her preferred methods.