So why hasn't he cured it yet? He has got four transfer windows so far and has done nothing to cure it.
Why do you think he'll cure it now when he hasn't been able to do it so far? Your Mourinho point is also stupid. We are on par to get 84-85 points this season which is excellent progress considering our last three seasons. The only problem we've is that Man City is on par to get more than 105 points which is ridiculous.
I'm beginning to think Klopp hasn't fixed their leaky defence because he knows that he'd have to sacrifice the attack that's keeping him in a job to do so. At the moment, they might have a tendency to let leads slip, but they also have the knack of scoring 5 or 6, and that's placating fans because they're happy to believe they're playing the most entertaining football. Their defence could do with individual improvements, yes, but the main reason it's so leaky is because of how they play. There is often very little cover for defenders in Liverpool's side, so when the inevitable brainfart occurs, more often than not it leads to them conceding. United's defenders are also fairly error prone, whether it's a rash challenge, a misplaced pass, or deciding not to bother tracking a run, but we're set out in a way that means at least one other player
should be in a position to get across and cover. That can come from another defender in the back-line or a midfielder chasing back.
If Klopp were to sacrifice one or more of his attackers to fit in a proper holding midfielder and/or an extra defender, then he's changing the way they play and neutering their attack. That's a gamble for him now because he's made his bed of gung-ho, shit-or-bust attacking football, and he's spent the last 2 years lying in it and blaming anyone but himself when it doesn't work. If he changes the way they play to plug the gaps in the defence and they're still floundering in uphill battles for top 4, he's in trouble.