Look I'm laying half the blame on Joe and half on TNA here. I do agree that Joe has failed as champ, and there are multiple reasons why.
TNA booked him to win the title in Joe vs Angle for the 85735973rd time. I don't really want to see someone gain a title off of someone that they have already wrestled a billion times. Stpid booking.
TNA failed to use Joe well when he had the momentum. I would have way rathered see Joe take the title before he feuded with Angle, had a few defences, THEN six months down the track face Angle after a nice long build. That would have given Joe the title when he was the hottest and when he deserved it.
The problem I see with Joe is that I think he has ind of changed, and not for the better. When he debuted he dressed normally. He was a blue collar destroyer. Yet now he's wearing these suits? The Joe character is one I definately don't want to see dressing like that. I think he lost part of his connection with the people through this.
As has been said by other people, Joe isn't the only one responisible for TNA's ratings decline. I'm fine with having Currymam running around, I find it entertaining. But it is definately time for AJ to get serious. With Angle thought to be having neck problems, maybe after Sacrifice have Angle come out and say he's hurt. Then AJ comes out and say that I'm still here for you man, and we've been through a lot. Then AJ just turns on Angle and vicously beats him down. This would make an awesome heel character, freshen AJ up, and make him serious.
The other person who should be more serious is EY. I know he isn't anyone's favourite wrestler, but the fans were (and still are behind him), and he then found his way into the main event of Turning Point. After this match, what did TNA do with EY? Nothing. This was just an absolute waste of EY.
I think TNA just has to pull the whole act together. With Angle probably out hurt, I really think that the next Champion has to be a serious AJ. And give Joe until BFG tp prove himself.