I’m ok if Dick gets a sidekick . It’s in his need, having someone to take care of.Just like Bruce he doesn’t need them as in help him but to help. I think it being Bruce’s son is what kept him in Bruce’s shadow in the long term. It just need to not be someone Bruce can dictate, and it’s wholly Dick’s. Both Tim and Damian are over being his junior partner now. If I had to suggest, give him someone , a mislead kid, from the court of owls , make him their mentor to teach them heroism as he goes in a journey to know his past with them .