Haven’t watched 314 yet (my download finished while I was reading this thread, so gonna get to it ASAP) but all your comments made me go watch the 315 promo.
It does look like Neal’s heart is likely being controlled by Zelena in some way. Which allows for a storyline where Emma helps him get his heart back, (because the Tin Man does end up with his heart in the end, and Dorothy (aka Emma) helps him find a way to do it). And frankly, that’s something I’d quite like to see! Neal helped Emma get her family back and now she can help him get his heart back. YES PLZ! Seriously, you don’t bring a main character back into the story after several eps absence and then wrap up their entire story and kill them in that same ep. I’ll honestly be very shocked if that’s what’s happening in that scene between Neal and Emma where he falls down. I suspect the most agonising thing about this upcoming week will be certain parts of the fandom, because the promo really doesn’t convince me that Neal’s about to die.
Also, I’ve been saying lately that if that cemetery scene in 316 IS a funeral, that it could be Little John’s, if they need to kill him to defend themselves from his monkey-ness, and here’s the trailer for 315 with some of them being set upon by a Flying Monkey. With all due respect to Little John, if he does die, I’ll be claiming cookies.