I definitely think Franklin has the potential...
It's just that with a godlike hero... What the heck would the stories be like so they keep moving away from it
__________________ Quotes from Hia8:
"I claimed that the science is sometimes faulty."
"You don't understand. This is fiction. That means none of this stuff really happened."
"There is no writer to purposely ignore a character's natural ability just because it suits the story."
"in some cases because the writer knows that Character A will dominate Character B easily and refuses to allow this to happen for the sake of the story."
No. At best, Franklin become a universal threat. He would compete against the like of Galactus, who is far, far below in term of power that the monsters named above.
Thanos + TOAA, PR-Beyounder, PR-Molecule Man and Living Tribunal are pretty much the ones able to lay the smack down to HOM Wanda.