Looks like there have been some perennial allstars and superstars drafted. Checked the teams, there are two trainable BIG prospects for the NT future:
Hayuma Kimiyama (35712866) 18 MVP from MMM
Iinosuke Enomoto (35712861) 19 MVP from AIM LOW
Erm... Superstars are able to be trained to a point where they could be effective at NT level. I know a certain SF trained within Japan that's one of the current roster's better players (I'm going to speak to that manager about what he aimed to do with that player, so I can emulate that with Ikeuchi)...
I also have a HK SF, that I really, really like - for his versatility. Superstar's absolutely doable... you just have to be creative.
http://with-malice.com/ - The half-crazed ramblings of a Lakers fanatic in Japan