I'd be very cool with Dick going back to being a Spy. That is my favourite thing with Dick Grayson. It was fresh, fun and funny. I always felt that they could mix the 2. Nightwing and Agent 37. A globe trotting Nightwing who still lives in Blud.
It pushes him away from the Batman-lite role which I think hinders him. I don't much mind what he wears. the Nightwing or the Greys.
The fandom was split over Grayson and there were complaints when he returned to Spandex so why not combine the two?
Give him a cast that pulls the best from both titles. Helena, Tiger, The skull Girls, The Runoffs, Raptor, new blockbuster, Guppy etc.