For one Ford isn't Chrysler. Second The Wrangler has a niche market where as the Ranger is a truck and used for dozens of functions besides off roading. The current F series in the V6 platform gets as good MPG as the Ranger with the same equipment and is larger ( personally my Ranger's size is right for me) and costs are similar. That's why the Ranger died. I don't need and will not buy a full size truck. Ford may someday make a small truck again but it will be to meet mileage requirements set by the government to offset the larger vehicles they offer and more than likely be a uni-body. The Global Ranger is a uni-body if I'm not mistaken.
And most of us can't afford a weekend vehicle these days. Ford will have to recoup their investment to produce it. By the time they design a small truck to meet the needs of most buyers it will be well over 20 grand and have to get well above the MPG of the F series to make it desirable. Look at all the crap Mahindra is going through just to get a small truck to the US market and they blew it with the gas milage it offers which is worse than my 93 4x4.