Two points:
First, relating to the above post. Rock/Austin was something that crowds went batshit for when they saw, even a month earlier during the 6-man Hell in the Cell match when they went face to face and hammered on each other. I don't see anything near that level of excitement from audiences when Orton and HHH are in each others' grilles. I still think it could possibly be salvaged, but it would require dropping the awesome Batista stuff they're doing now and put the focus squarely on HHH's problems with Orton rather than his own in-group problems. It's just impossible manufacture that kind of heat for a confrontation, as they've been trying to do. The crowd really has to want it badly for you to make it your Wrestlemania centerpiece for your flagship TV program.
Second:
Prick v. Prick doesn't work. Rock was a big-time prick, but Austin was a guy who just always looked out for himself and every now and then would do the noble deed of some kind (ie. saving Stephanie from the Undertaker sacrifice/wedding 2-for-1 special).
Orton's just a dick, and HHH is the dick we're supposed to hate. There's no real difference other than perhaps one being more arrogant and the other being more malicious. Crowds, especially now that they're worn down to the hardcore fans not dissimilar to us, see no reason to be excited about this, especially now that they've seen it twice. If anything, the Orton push needs to be dialed down just a tad (don't drop him off of main event level or anything) and reload for a good SummerSlam program. Just keep Orton (since this is who they're banking on to be one of their massive new stars to jump-start things in 97/98) away from his big opponents until the time is right, and please tweak things a little bit so he's not just some prettyboy Austin/Rock/generic face wannabe.