Quote Geoff="Geoff"Surprisingly sensible, for once, though I’d keep the onside/offside in, which doesn’t take long to rule on.'"
No checks for obstruction
No checks on foul play
No checks on-side or offside on kicks
No checking challenges in the air
So, if the ref misses ^^^ any of these, the VR can give a try if he sees the ball grounded,and you think that's sensible? It's simple really, If the ref isn't sure,then just hand it to the VR. If he isn't sure,then disallow it,If he is sure, then give it. That's not rocket science.