I've never known anything other than DOO, so I don't know what I've missed.
TBH, it isn't all that bad. My job is to drive the train so, provided no-one pulls the cord, I don't worry too much about what goes on behind. However, it can be a very lonely place to be knowing that you're probably the only member of staff for miles, and you are vulnerable. Then again even the scrotes want to be someplace, so they tend to leave us alone.
As for the driving, it's a case of pull up to the stop board and give a door release. There's no question of needing to check you're all the way in because the boards should be in the right place to ensure this. Then it's either hang out the window and wait for the doors to clear before shutting up and clearing off, or wait for the tip from the platform staff.
I wouldn't like to give the impression that I think DOO is fine everywhere. It works where I am because the service frequency is high, the distances between stations short and the communications with the Bobby is generally easy. Of course, if you've got to rush off to put down protection or wait for an assisting train the punters are left entirely on their todd which isn't ideal. Then again, I've not been in this situation yet so perhaps it isn't so bad. They ignore everything I tell them anyway so they probably wouldn't even notice I'd gone.
one TN