My other bias - it's true that Jin's voice is very unique and lovely. I haven't found another male vocalist with his vocal tone/color/sound! His humble and introvert nature really does allow many people to overlook him but not worry - I think many ARMY acknowledges what a secret treasure he is!
Moon and Abyss also rank as my top BTS songs while Epiphany was one of my early BTS favorite songs. The demo on Disc 3 was also incredible. I'm a sucker for ballads and his voice, so I'm with you OP - I'll be waiting for his album no matter how long it takes.