I defend NBK as a great IGL
He is not ex6, he is not that complex, he is not a born leader but he has a good fragging ability and is ready to do everything for his team to win. And is consistent in his work/motivation.
To me, he is the next big IGL for France. Thing is that he never had time to prove himself. His first tries were in time of crisis within his teams, where it was already too late and happy did not wanted him to igl. The last attempt with G2 was with 3 months to work, a foreign player, a big pressure from the org and kenny who did not believed into this project.
NBK needs a bit of time to gain experience, which he will do by playing with Vitality. Then, I could see him create a stronger team on the next shuffle, bringing back KennyS and Shox