Bin it. It’s not ready yet. I’d rather have refs and linos cocking it up without the pseudo science of poorly drawn angles read by a twat in a studio.
I'd certainly do away with the line-drawing. Let VAR alert the ref to check the screen if there has been an error which is clear and obvious without the drawing of lines. Let the linos get back to giving offsides and let the ref have the final say on everything, not someone in a studio.
The goal-line technology is fine, when they remember to turn it on.