Sorry man, it's not gonna happen. The cars you refer to that were "brought back," like everybody said, were completely different cars, the only similairty was the name of them.
The XJ was replaced with the XJ, which does sell (you see a lot of KJ's here in California), they are not going to "bring back" a vehicle while it's replacement is still selling.
Even if they do start producing a Cherokee (I highly doubt the body code would be XJ again), it's not going to be the same. I guarentee you it will have IFS and no 4.0 option. It's just the way they're going.
Also, by your saying that you cannot get a new XJ right now, but you want it back right now, it just going to get DC to laugh at you, as they pointed out, DC (like all companies) sees dollars, if there's ten million people who want the Cherokee back, but they can't afford a new Cherokee, well, they're not going to get it until they all can afford it.
Hate to break it to you man, but we're all stuck with our old cars, luckily they're the best car to be made in recent history!