mehhhhhhh I'll push back on this, although I like it in theory to keep the pace of the game moving
3 seconds for truly tight decisions isn't enough to see it from multiple angles to make sure you get the call right.
OH! and I forgot! Also, there should be a live audio plug-in for communication between the CR and VAR official as they discuss their decision for transparency. We may not agree but I think this will help reduce ALL thoughts of "conspiracy" from Brasky... I mean tinfoil hat wearers. ...which includes Brasky. (I love you, Brasky!)
Rugby does this and it's brilliant -- I mean it is truly brilliant in its simplicity of execution: