Yeah, a factory supercharged JK would be nice.
But, it they can make the SRT-8 Grand Cherokee, I don't see why they don't do a low production run SRT-8 Rubicon.
Wait, scratch that
. Now that I think about it, if I am already in the market for a V8 Grand Cherokee, it wouldn't be such a step up to produce/buy the SRT-8 Grand - as long as I could live without off-road capability. But, going from a JK Rubicon to an SRT-8 Rubicon... For DC, the production cost of beefing up the JK drive-train to handle the 6.1 Hemi would probably be prohibitive, given a low volume product - especially a "trail-rated" one. And DC making an SRT-8 Rubicon probably wouldn't do the other Wrangler models any favors, sales-wise, either, ie. "I won't buy that V6 JK Wrangler now that I have the funds; Instead, I'll save up for a year or two and get that cool one with the Big Engine! Yeah!"
(course, there may be multiple markets for Wranglers and I am lumping buyers all together under the age 18-99 male "performance/off-road" demographic