It's hard to say - sometimes I think yes, then other times no. Like his ECW title run - was that like a "hey, welcome back, here's a push" type of thing or a "look a former NWA/TNA World Champ is ECWWE champ now - that's the best he can do" sort of thing? As far as I can tell, Christian is back to doing what they used to have him do - hosting the Peep Show from time to time or just generally used for his superior(to almost EVERYONE else) mic and promo skills. He's a truly talented in-ring talent that is made to mire down the card helping get people like Del Rio over. The simple fact that they had him involved with Matt Hardy should suggest the level of seriousness that they intend to push him, right now anyway. I'd love to see him feud with Edge over the World title - but again, I wonder if Vince thinks this would be lending credibilty to the competition, which he's not known for, lol.
Just look at Gail Kim - the only other star I can think of they brought back from TNA - they're doing nothing with her and she's the most talented female performer they have. Not even a decent bloody rivalry for her.