Really? Not much of an effort to do huh? Are you an automotive engineer or work for a major automaker? Let me tell you - it is quite literally hundreds of millions of dollars in development and tooling to create a "sport trac" version of the explorer off the new 2011MY truck. That is why it was dropped. Plus, you are looking at an easy 3 years of development for desing, tooling, performance, durability, safety, et., etc.. Even if demand doubled or trippled, it would never pay off. Not even come close.
Now, I have been a Ranger owner for most of my driving life. I love that size vehicle and am angry we can no longer get that class of vehicle from Ford. The new "global" (albeit less NA) ranger is awesome, I just wish we could get it here. It would somewhat canabilize F Series volumes, but is more a vehicle for those of us that want utility without the size of an F150. I bought my last Ranger knowing full well I could have gotten better fuel economy in a similar F150. Maybe we will see a shift in mindset / maybe the new F Series will have another offering for us. only the future will tell.