Here is an idea I got from Brian from Canada (I only steal from the best,
). Maybe one way
Grayson could evolve is for him to make his eventual return to life as an open hero leading a team of open heroes like the Fantastic Four or the Avengers of the MCU. The purpose of the team would be to represent and speak for masked heroes to the public, while also making sure the masked heroes were kept always aware of public concern and opinion. The team could also be an interaction point between the hero community and the world's governments and espionage organizations. Membership could be new heroes that Dick meets, but also s o possibly Garth as a representative of Atlantis and Donna, perhaps, from the Amazons. That would firmly establish Dick as independent of Gotham, while re-establishing his role as a leader and connector.
Now, Brian can scold me for misrepresenting his ideas.