I love it, I think it adds to the drama. There will still be contentious decisions, but generally there'll be less big mistakes, which is a good thing.
Regarding Wednesday, I don't think Llorente's goal should be classed as handball, as it was completely unintentional, but based on what we've seen given in the CL this season (Otamendi, Kimpembe, etc) I'm disappointed it wasn't as the rule seemed to be if it hits your arm in the box it's a foul.
As for Sergio, by the letter of the current law, it was correctly ruled offside. However, I've argued for ages that the offside law is ridiculous. It shouldn't matter if someone's toe or left knee is offside, that sort of margin makes no difference. The law was created to stop goal hanging. I'm not sure what the exact solution is, but I would suggest that changing it to "if any part of you is onside, then you are onside". That way, realistically, you have to be a yard ahead of the defender to be given offside, which would remove the majority of instances where someone who isn't trying to goal hang is given offside because of miniscule timing differences.
As for VAR ruling it out and spoiling the fun. I'd much rather have has those celebrations and then the deflation that followed than the linesman stick his flag up straight away. Football is about tension, drama and the emotions that come with them and we got a boat load of that on Wednesday night. It went against us this time, but sometimes it will. I bet it was brilliant in the Spurs end when that decision flashed up, they went crazy, which wouldn't have happened if the linesman had simply raised his flag.