You know, this is a pretty good blueprint for how the Titans SHOULD be written - as old friends. I mean, the core members of the JLA and JSA and so forth have all known each other for years, but it's generally more of a 'knowing and respecting your colleagues' situation than their actually being friends (Wally and Kyle's buddyship notwithstanding). The Titans, however, have been hanging out together, in one incarnation or another, since the very beginning. In the early years, they hung out in their clubhouse and listened to records; in later incarnations, they dated each other, got involved in each other's lives, and met each other's families (who sometimes consisted of six-eyed demons trying to conquer the earth). They've thrown birthday parties for each other, organized each other's weddings, gone out to movies, talked excitedly about their new apartments - they're friends. That's what makes them so interesting - they genuinely care about one another, and get-together lunches like this are evidently par for the course. That's the main thing that I think the new team is lacking - they're not only not friends, they HATE each other!