Microsoft partnered with Oculus a year ago for this. The controller that is being included doesn't add any meaningful cost to the package. Even if they are paying the cost a retailer would for the controller (which they likely aren't), the cost is at most $45-50. If people still need to have the controller to play with the Rift, then the cost savings are moot. That's like selling a console without a gamepad. It's an incomplete package. People don't like having to buy extras if it's a required item to use the thing.
The camera in the Vive is a massive addition to VR. You'll see when you get to try it eventually. Those dedicated controllers you mentioned, they're not visible to you while the headset is on withought Vive's chaperone system. It doesn't require the camera for that, but it's a huge advantage over what Oculus has provided for finding your controllers while in VR (read: nothing).
Your assumption about the games is way off too. There are very few games announced that are being released in VR and for regular screens. The way games need to be created for VR is very different, so no one is putting in that effort.
The only exceptions that I know of are a handfull of simulation games, such as Project Cars, Elite
angerous and Star Citizen.
Vive games are certainly not being developed for regular screens. Many of them won't even be offered on other VR platforms.
You seem to be contradicting yourself though. What do you want? A basic VR headset that is cheaper, or a super advanced headset that costs even more?
The reason the resolution isn't as high as you believe it needs to be, is because the technology isn't there yet. You can't have a 4K screen in a VR headset, even if the displays were available. Graphics cards can't produce that kind of resolution at the frame rates you need for smoothe, motion-sickess-free VR.
Also, eye tracking is just begining to be a thing in the PC market. It's cutting edge technology that isn't yet supported by game developers very much, and would add even more cost to a VR headset.
Eye tracking will be a benefit, but its a long way from a make or break feature.
Oculus and HTC are taking on the problems that they can solve right now. The other features that you think are so necessarry would raise the cost far higher than anything they are including for the first round, including the front facing camera and room scale trackers that HTC and Valve are working on.