Maybe it could be useful to implement layers on the plex.
Sometimes, I need to link one thought to 10 or 50 (jump) thoughts. However, that makes the plex too much confused. Layers could be the solution (to work like visual filters).
I know that Link types could fulfill that function through Reports.
However, I am not sure that —even in TheBrain 11— Reports can modify the plex so that it only shows filtered thoughts (this was available on version 8 and was very useful).