+1 for Return of the Jedi. I know it was game over for Vectors in 84, but that would have made for an awesome game if Wells had made an improved version of the 6100 for ROTJ. Maybe a Mid Res like the amplfone.
As for games I would have liked to see. How bout a 3 screen version of battlezone (ala tx-1) or even a 2 player version of some game were the players face off in back to back vectors for linked up head to head competition.
How bout Daytona in 25" vector glory linked together for 8pl. racing. That could be cool.