Stern will do anything that makes a profit. Not slamming them for that - thats why they survived when others did not. So all people need to do is figure out the cost of re-tooling the assembly line for Tron VE against the cost and number of units they'd need to sell to make a profit. Would it be more profitable to dedicate that assembly line to a limited run or to a new pin.
my opinion - they'll do it if they can fit a limited run in between runs of other new games. Don't know how likely that is if they're assembling other games on top of their own though.