I'm not sure if it will make a big difference. Most riders I have spoken to know the approx price a ride should be and if it is a lot more, they tell me they wait a 5 or 10 min and try again. The only difference it would appear is tbe app would tell them exactly how long to wait.Looks like in near future whenever its surge pricing Uber will be telling passengers that if they wait a little longer the surge will be over and price will be cheaper.
If in the end, if it does mean less surge rides, then I just won't get off the couch. The money from uber is only gravy anyway.