It's all so simple when you listen to football fans... trackers in the balls, trackers in the boots, lines virtually painted on the pitch, more and more technology, less reliance on a human. Come on they all say, we have video replays from umpteen angles! Surely we can get things right with a video replay!
But technology is of limited use in football, just as it is in cricket, or in NFL, or tennis. There's some benefit with regards to say, the ball crossing the line, but it's limited. What's a penalty, and what isn't? (For example).
What we have right now is what fans wanted yesterday already, this is what they have called for for years. They were sick of human mistakes in refereeing and demanded technology to sort it out. Of course the trouble with football video refereeing (as it's done currently, and as it's expected by fans) is that it's taking an interpretation question from the pitch, and asking someone else to rule with their own interpretation. That can never, ever work.
I'd sooner see a respect for the decision on the pitch and the role of the referee rather than more scrutiny by a video referee in Stockley Park, and his equally unexplained interpretation.