I'm kind of a weirdo for Dick - he is (or him of certain era not now), my favorite character, but I'd have a Titans without him, eventually. I do think that, as a point of differentiation with the JL, the Titans need to be a "full-time" team, unlike the League, which is a bunch of solo heroes who get together. That means they need to live in the same city, and only occasionally have solo adventures. They need to be more of unit than the JL. So if Dick goes off for solo adventures, he should no longer be on the Titans and only occasionally guest.
Discussed here.