IMHO as a part-time Uber driver, Uber could fix a lot of their current problems by putting tipping into the app. The self-driving car is not here yet, and Uber does not do enough for its drivers. If they would just add tipping I think that better drivers in better cars would start driving again. Without the tips, it's just not worth it.
No thanks! If drivers need to be compensated better, I would suggest increasing the fare or Uber taking a smaller cut. A lot of people prefer Uber just so they don't have to deal with tipping like in traditional cabs.
Is their any data to back this up? Outside of Hacker News, I don't think I've ever heard someone complain about tipping. I have no problem with it.