Even if Foley does stay around after the backlash match with Orton, I don't think the WWE would push him in the main event scene, because of the time Foley would be an active wrestler in the company, I just don't think they will
But as you said HBK and Benoit are the only two solidified main event workers right now, because you do have the upper mid-carders; them being Kane vs. Edge and Jericho vs. Christian but with them being in fueds with each other i dont see them pushing for the title, seeing as the champ is face and so are Jericho and Edge, esp. with Edge just coming back there not going to push him for the belt just yet and Jericho only just turning fully face they won't push him against Beniot, where as Christian won't get that push either (here's hoping he does tho!). So the only logical person I'm seeing to work with Benoit after Backlash is Kane, cos he's got to have a title push sooner or later because of the image change.
I have more thoughts, but these will do for now
