Back when he was champion, could Kosei Tanaka have become unified champion in all three of his weight classes? The others champions when Kosei Tanaka had a WBO belt in these weight classes : Minimumweight / 105 lbs : José Argumedo (IBF), Chayaphon Moonsri "Wanheng Meenayothin" (WBC), Hekkie Budler (WBA). Light Flyweight / 108 lbs : Ryoichi Taguchi (WBA and IBF), Kenshiro Teraji (WBC). Flyweight / 112 lbs : Moruti Mthalane (IBF), Julio Cesar Martinez (WBC), Artem Dalakian (WBA).
I'm a fan of the lower weights but due to lack of fight footage at the time.... can't make a decision based upon nothing more than conjecture.....
Lock for FOTY contenders.... maybe his eye issues will clear up. Wouldn't even mind a crossroads fight with Kyoguchi if he decides to lace the gloves up himself.