The key gripe is with the never-ending wait while a decision is made. A limit of a few seconds to check on VAR will surely satisfy most fans, as well as stopping these infuriating forensic ‘is there a pube playing someone on/off’ decisions. There’s not enough evidence in a few seconds to decide conclusively? Oh well, we’ll have to go with the referee’s original decision.
To me daylight will help with both the original decision by the linesman, the players, and finally VAR.
VAR as actually arguably helped the flow of the game as referees are less likely to blow for a foul or offside, waiting instead to see how the play pans out. I wonder if the ref needs a signal to denote this though, like with the advantage gesture. If the lino thinks there’s an offside then raise the flag, otherwise it can’t be used to chalk off a goal when the goal is already being reviewed for a different reason such as a foul/handball in the box. Again, this speeds up decision making.