Like Bob I've not seen much of this. What is the system?
Personally I don't think it's needed. Football isn't as technical as cricket or rugby with some of these things that need to be slowed down and seen over and over to be sure. It's actually a pretty simple game. The issue for me is that the rules allow so much importance to lie on a referee's decision, which can never be reliable. Penalties can be awarded which completely change a game's outcome even if the offence occured on the corner of the box with the attackers back to goal and absolutely no danger. It's not proportionate. Meanwhile a ball accidentally brushing a defenders hand can get him sent off, banned for a game and his team concede a goal. It's a ridiculously strong punishment for something that referee's regularly struggle to get right. I'm not against technology, but I think the issue is that the marginal calls have become too important.
And I strongly believe it isn't just the real big talking points in a game that matter. If you watch a live game you often see how a whiny home crowd means that their team get loads of little free kicks which accumulates into a big advantage over an entire game. I think this is a big part of what we call home advantage. They might pat themselves on the back if offside calls and goal decisions are made more accurately, but that isn't the whole problem.
