Please realize that Beta will not have the features that we want, because it goes against Dice's plans for Slashdot.
You make some good points, but the thing I don't understand about this idea that Dice is intentionally repurposing Slashdot is that if they do so, they lose almost all the value of the existing site, leaving only a well known domain name and some sort of "brand". The former is easy to come by, and the latter is of no value if all its previous "audience" becomes disillusioned with it. So, can someone please explain to me why the deliberate destruction of Slashdot would be in Dice's business interest? Also, if that's what they wanted to do, why bother with a transition to a new format at all? Why not just pull the plug on the old site if you don't care about alienating the existing "audience" because you'll be doing something completely different with the domain?
It seems far more logical to me that they would try to retain the current "audience" as much as possible, which is where most of the value of the site is. If we assume they're losing money with the current format, it might be logical to for them to change formats, though there's a significant risk of alienating the current "audience" if they change it too much too fast, or otherwise handle the transition badly - as they've clearly done. As the old saying goes, "Don't ascribe to conspiracy what can be explained by incompetence."
So, personally, I think they want to restore profitability via a change in format (which may or may not work - probably not), while somehow retaining as much of the current "audience" as they can. That may be an impossible task, but if we assume they're currently losing money on Slashdot, they don't have much to lose by trying. At the very worst, they could make it break even by just shutting it down, then make a modest profit by selling the domain name for $100K or whatever.