Hey YouTube, how about making it plain, right up front, how long is the video I'm thinking about watching.
The duration of every video ought to be the denominator in the time counter, which would read "0/X" before the Play button is pushed, and where X is the total duration of the video.
As it is, I probably don't finish watching 60 or 80 percent of the video links I click.
This oversight leads to an irritating waste of time and bandwidth, and it's the reason I increasingly avoid clicking YouTube links. With the duration stated before the click more videos would be watched (even if deferred to later), and good will would increase.