Troy's return will be the perfect plot for the movie. Since he'll be sailing Pierce's boat, they can somehow work in a Chevy cameo too.
This is great. Payoff from the "Animal House" style credits for that episode in season 1 where Abed wanted to experience all the "College" stuff from the movies:
"It was dehydration from filling up all of those cylinders." -- The perfect way for Pierce to die