Mastermind wrote:
Another possibility that is waaaaaaaaaaaaaaaaaay out there... Super Joe in 3 3/4". I think the regular guys could be done pretty easily (Super Joe, Super Joe Commander) but Gor, Luminous and the Shield may need new tooling. Just a thought (and I may be the only one would buy the set)

I think the odds are better on Mike Power and Bulletman (both of whom I wouldn't mind). There's never been any indication that Super Joe is part of current continuity, even within the Club's storylines. Granted, it WOULD be interesting.
Another interesting point has been made -- something entirely new! We're just assuming it will be something familiar since the modern-style Convention Sets to date have generally been used to make modern-style figures of established characters that Hasbro wouldn't be terribly likely to get around to, such as Oktober Guard, Night Force, etc, or completing certain teams like Python Patrol, while introducing occasional new characters such as Crimson Asp and Freestyle, and working in a certain international flavor with the likes of Letal, Mortal, and a few others.
But the traditional-style sets definitely gave us a lot of new characters and troopers, such as the Dreadheads, Major Bludd's Skull Squad, the Coil. the Black Dragons, the original Swamp-Vipers, and others. An entirely new-character Convention Set could be very interesting indeed!