In my opinion, the single nut wheels are a no go because street cars don't have them, but more importantly it waters down a significant skill set that pit crews must have. I know the team owners would like to dumb down pitstops so they can hire just anybody to do the work, but at the highest level of motorsport, I want to see the most talented pit crews. In order to have a paddle shifter, you have to change to a totally different type of transmission. I suspect this indeed will come, but once again, you are dumbing down the skill level. If I had my way. they would still be using T-10 or Muncie type transmissions so we could see who REALLY has skill on the road courses. Any dolt can run a road course with a paddle shifter, and the current transmissions NASCAR use require only a little bit more skill. Regardless of my opinions, I'm sure paddle shift transmissions aren't too far off. If NASCAR goes back to stock type engines, it will be difficult enough for awhile to get the balance of performance right between the competing makes without bringing in the complexities of totally different engines and aspiration types. It may well come in the future, but there are only so many mountains you can climb at one time. If they insist on incorporating hybrid technology into these cars, you will likely get your all wheel drive wish. I'm not in favor of it, but I'm sure NASCAR doesn't care what I think. As far as I know, I thought IRS was a done deal.