Lol, OneMan definitely belongs in that category but not me. Thank you for the compliment though!
On JFK and Heinen, it's really going to be camp dependent (and also dependent on who is still here; Spooner being key here). JFK looked lost in that last game of the season, but I always like to remind myself that he was playing the top team in the East, hadn't played in a couple weeks (besides practices) and was playing center (the most important position for forwards). He got his "taste", now it's time to see how he develops over the off-season with some training. He'll definitely need to get stronger to be an option next year.
I think Heinen has a better chance to make the team b/c he's playing wing, which is more of an open position on the team. They have Marchand, Pastrnak, Backes (if he stays on RW), and that's pretty much it for locks. For centers, Bruins have Bergeron, Krejci, Spooner (like him there or not), and Nash/Acciari can both play center. If Moore isn't re-signed, I think Nash slides over to 4LC. Spooner, until moved, is still here and an option for 3rd line center once again. And I take Spooner over JFK right now, b/c Spooner has shown he is an NHL player.....JFK, still a "?"
Camp is going to be fun. We have all this competition going on, and we haven't even hit the draft yet. With trades and FA still ahead of us, it's so hard to really make this prediction. Bruins could go out and sign a veteran winger on the cheap, or trade for one, which would solidify one spot, and close up another for a prospect (creating further competition for whoever is left).