I want this. Like She-Hulk has a hard case that might involve fighting bad guys, so she gives a call to the other superhuman lawyer. Peter gets dragged on the case by something else, meets up with the other two, joins their road trip (mostly so he doesn't have to pay for shit).
At some point they just find Frank in a waffle house in their secret identities and resolve to stop for a day and try to arrest him, because DD has to do that everytime. Shenanigans happen, the criminals get arrested, Frank escapes, hears about the case and decides to go check it out, the three heroes now not only have to stop the bad guys from killing the witness, they also have to stop Frank from killing the bad guys.
This would have to be at some point where DD and spidey have secret identities, but Shulkie knows about them, somehow.