Frank has been through a lot lately, including dying a permanent death in the MAX universe.
1. Marvel seems to want Frank in the main MU-616
2. the REAL Spider-man, not the cheap fake that is running around finally rallied the Avengers and they shut Frank down and Tony puts him in an undersea prison that Frank cannot get out of unless someone frees him. This is ideally the best prison for Frank as we all know that if he goes to Ryker's or the raft the prison population will soon DECLINE.
3. Frank somehow is out of that prison and with the Thunderbolts, a team up that you just know can't last for long.
So, what does Marvel do? Keep Frank around in MU-616 despite the fact that the Avengers could and should stop him? Should Frank leave New York and travel the country and world blasting bad guys? He's done that before but always heads back to New York.
Should Frank face super villains? Remember what Daken did to him and the results of that?
Should Frank get some type of Infinity Formula or similar serum?
Or should they do a story where Frank falls into a dimensional portal and ends up in the MAX universe where his counterpart is dead but our Frank is there now, alive, young and ready to blast bad guys?
Marvel should hire an intelligent writer who understands that the Punisher exists as a means to showcase that the legal system doesn't work.
The idea of the Punisher was born in the 1970's when crime in New York was at it's worst. The idea of taking the law into your own hands was a strong desire.
Marvel need to re-tap into this idea and find someone who can tell compelling stories based on this.