If the North and South Korean leaders can meet up to have a dialogue, why not the CTA and Dorje Shugden followers? After all, Shugden or non-Shugden believers, they are all Tibetans. It is time to put what Buddha Shakyamuni's teaching in practice, be tolerant and respectful to people who are different from us.
Until today, the Tibetan leadership still has not solved any of the major disputes within the Tibetan community. In fact, they are the one who created them. For examples, Dorje Shugden ban and the two Karmapa disputes. None of the two Karmapas is allowed to go back to Karmapa's monastery in Rumtek. Not only that, it confuses the followers as well, they don't know which one to follow.
Dorje Shugden ban has destroyed many families, broken the relationships between friends and teachers and students. There is no benefit from imposing the ban, it causes disunity and disharmony within the Tibetan community. Disunity and disharmony are the real reason why free Tibet movement is not successful after so many years.