I'm interested in how they were able to create the TSN System. Didn't the Book of Twilight also install security onto Kite's character data that he can't be deleted, banned or modified? .... or is this another one of those Liminality non-canon easter eggs?
It is canon, since Lios was unable to delete Kite in the games. However, the Phases were also supposedly undeletable or modifiable, but CC Corp managed to make the Epitaph PC's. Logically, the same can be said about Kite, right? Plus, since the TSN system was made in 2010, it's probable that Aura allowed it to happen, since it was for the benefit of the World.
And my last point, the TSN AI's aren't using the original characters' data. It's, at best, a copy. The TSN System was made in 2010, Kite, Orca, and Balmung have been playing until atleast 2014.
Taking THAT into account, all that's required is for Kite's data to be copied, and the copy could then be editted.