Ole's system is more reliant on the players he has than any other coach in the top half apart from Mourinho probably. It explains why we fall apart when a player or two is missing.
I've seen Guardiola sides still play his style of football when they had KDB, Silva and Fernandinho out. They might drop points but you could see there was a fundamental system. If we have Bruno or Pogba out, all of a sudden our play style changes and probably for the worse.
When two or more starters are out we look clueless. The replacements in the team also play nothing like the players they are replacing in the team. It just shows his 'system' is just about putting good players on the pitch together.
Like someone else mentioned, his main quality is motivating players and creating a good team atmosphere and if you have good players that will take you a long way. However without a clear playing style or top coaching ability, we will never truly be successful under him.
The difference is that Pep has the luxury of replacing those players with the likes of Mahrez, Gundogan, Jesus, and B Silva, we've had to rely on rubbish like Lindgard, Pereira and a past it Mata. Not only does Pep have the luxury of having good players, but their back ups are also a good fit for his system/style
Everyone is reliant on certain players to make it work. Take the fullbacks or Salah/Mane out of Liverpool and i can guarantee you they will look comparatively toothless because no system in the world is suddenly going to turn Firmino into a prolific goal scoring CF.
If Ole was a shite tactician he would not have managed such a decent record against the top teams, but as we all know its the smaller teams that has been his Achilles heel so far. We struggle breaking down low blocks and as a result have a pretty shite record against them. Also in my opinion, we lack the squad options to make any meaningful tactical adjustments. Sure we can throw on Ighalo and just throw more men forward, but other than having more bodies in dangerous areas it does not really offer anything different. So its mostly a personnel issue for a few key reasons
1. We lack good attacking fullbacks. Shaw is alright when in form and i thought AWB got better as the season progressed, but neither of them are prolific crossers, this is also made worse by
2. We dont have a single natural winger at the club (James, but hes not good enough). Rashford and Greenwood are good, but they are forwards not wingers.
3. All of out attacking options are very similar. Martial, Rashford and Greenwood are all at their best when they can run at defenders and all of them are capable finishers. Greenwood looks like he could become a good poacher as well, since his positioning is really good for someone his age, but a target man for example is something we lack.
4. Our midfield problems are still not solved. I would not say that the novelty of Bruno has worn off or that it was just a purple patch, but by now every team in the league is going to be aware of the threat he poses so they are going to make sure hes watched very closely. Vs Palace for example he was constantly swarmed by 2-3 players the second he got the ball so they completely shut him down. If Pogba and McTomminay had actually used all that extra room that gave them things would have gone differently imo, but alas both of them were fecking awful. I honestly dont know what is our best midfield set up. Pogba + Bruno sounds like a mouthwatering prospect on paper, but so far it has not been that great.
Could also mention that until Bruno arrived we also offered zero threat centrally so it was a case of us having very little threat from out wide and no threat centrally so it was not strange we looked like we could not score in a brothel
We have a system, the problem is that it is entirely dependent on the front three+Bruno both creating AND putting the ball in the net. If we had dangerous wingers and/or Pogba in the form he was when Ole was caretaker i can guarantee you we would be much more unpredictable and hard to contain. Dangerous wingers means teams have to defend wider against us instead of just packing the box and an in-form Pogba means they have to push higher to pressure him or risk getting completely pinned back