Deadpool, Daredevil, and Spider-Man, future 1-billion MCU movie? What do you think? It would likely be a Spidey film, just like DP & Wolverine was really DP's.
Only if you pick one of them, probably Spider-Man to be the focus, and the other two are supporting characters.
Maybe Daredevil is working on being a mentor to Spider-Man while SM is trying to stop Deadpool from being Deadpool, while also being tempted by the draw of not needing morals while stopping crime.
Street level problems exacerbated by an unhinged Deadpool.