in two minds tbh. It can benefit the game, but at the same time such sophisticated technology comes at a cost. It has been estimated that a football club can expect to pay between £125,000-£250,000 for the installation of a Hawk eye type system. That would be absolutely crippling for some. Plus, (correct me if I'm wrong), it's not real time. It's what is used in tennis, and would hold up play.
So not sure as yet. Besides-wouldn't you miss all the talking points of refeering decisions after a match?
its about 15 seconds, only needed at obviously moments, theres enough to talk about in the game as it is to be honest, and it would only be implemented at the top levels