This episode will be epic, though (even though we will meet Batman) I'm a little disappointed that we wont actually meet Batman. Was genuienly hoping we'd see him in Titans; and it (I think) would have made sense for it to happen before Dick became Nightwing, I guess there's a chance we'll meet Bruce Wayne (in reality) at the end of the episode once Dick breaks the spell or hallucination he's under, but I'm not holding out too much hope.
Maybe (with any luck) they'll be an interaction between Dick and Bruce in the final where Bruce gives him the new suits after realising he needs to let Dick go or something? A scene between Bruce and Jason in discussion about those cops wouldn't go amiss either.