I was kinda hoping Soorim and Jaehoon would have followed Hooni out of concern and stopped him from jumping. Feel that would've not only been more impactful, but progressed the story and characters a lot better than "I wanna die... Nah actually maybe later" for the 50th time :S
Or even having the catholic guy catch on to what Hooni was planning and catch him before he could fall. That would set up a new dynamic where Hooni now has an older figure in his life looking out for him and offering spiritual advice. If Hooni found comfort/family through religion that would be a good motivation for him trying to better his life rather than end it. Kinda feels like wasted potential and it's gonna make it harder for me to feel anything when Hooni tries to off himself again 'cause he always goes back on it.