Assuming people will buy rF2 because it has DK2 support is a bold assumption. If someone has a dev kit now they've already purchased one of the other racing/driving games to experience. Someone who isn't a sim racer owning more than one racing title is highly unlikely.
Sim racing is competitive just like first person shooters and when someone is using a dev kit and getting their arse kicked because they are looking through a screen door and can't see things until it's too late, this tech is useless for said software. I personally don't see the use of jumping on the bandwagon until a consumer(usable) version is released.
If you're getting your ass kicked, it's not going to be because the screen door. Sorry. Now maybe you don't want realism in tintops and don't want to deal with blindspots that occur in real cars, but any short comings are not going to be because of the screen door effect. So I'm not sure what in the world you're talking about, but you do seem like a contrarian on everything, so I'm not surprised.