Banning left turns will be a huge improvement. Now if only SPD bothered to enforce (I've only rarely seen them out at rush hour to catch drivers).
While I don't see many drivers using it during peak hours these days (when they aren't supposed to), I have personally never witnessed enforcement. In fact, your photo is the first I've ever seen of it occurring -- I thought it was a myth!
Question for you: do you think it's okay to enter third going southbound from Stewart, to turn right onto Pine? Not sure how literal they mean the "right on right off" thing to be. I did this with a platoon of cars the other day, but ignorance in general seems rife along third, so I'm not tempted to think that it's okay just because a bunch of other drivers did it. I had to reach a patron with Lyft who was waiting on Pine between third and second -- didn't immediately know how to reach her without making a really complicated set of maneuvers; I would have had to turn right onto Stewart (no left in the evening), make a left on 2nd, go down to Pike, turn left, proceed to 4th, turn left, turn left again at Pine, and then proceed down Pine. I've confused a lot of people due to all the turn restrictions downtown, since they can see my maneuvers on the app. I usually have to explain the situation when they get in. Most people who walk are obviously not aware of turn restrictions.
The worst restrictions seems to be 5th at Pine; no turns period. Westlake is a popular pick-up spot. I have to go to Pike, turn left, turn left down the alley, and then turn left again onto Pine (really hard now due to the cycle path).
https://farm9.staticflickr.com/8815/28702681925_6280aea704_b.jpg
The other changes for bus riders will be very welcome (off-board payment kiosks, mostly), but I'd like to see similar treatments on 4th and 2nd during peak (using the handheld readers carried by Metro staff, who are used in the tunnel for now).
Is Metro planning to add off-board payment systems to all lines in the future? I know it's expensive, but it would really improve frequency, me thinks.