The relaunch has aged Dick down and while he isn't in the bat titles at the moment his past still plays a big role in his future. How this will be balanced once Titans Hunt is released should be interesting. Now let's assume that in a few years DC will allow marriage and kids to return...does anyone think any of Bruces' kids would be able to settle down? I don't. DC can be particular about their Batman brand and how the characters relate to him. They freaked out over how much Dick aged him and having one of his sons get married would unfortunately have the same results.
Whether or not the characters can grow on their own outside Batmans' influence depends greatly on editors allowing change to happen.