How can you say that we were like this at any point under Ole. Even last season when we came second, we went behind more than half the time and never had control. We always were very slow out of the block and always struggled to play cohesive football for more than a half at a time. Again not saying that Rangnick has come in and immediately revamped us into prime Barca, but he has immediately understood the issues with 4-2-2-2 and moved away from it to 4-3-3. Ole basically always played 4-2-3-1 even when everyone could see it was not working.
As for why Bruno wasn't in this role - well isn't it obvious? Ole didn't want him like that even when everyone could see that we needed him to be dropping further back.
Fred also has a much different role now as he is moving up further. McT has actually improved his CM play and is now making himself available more often for passes and we are seeing some semblance of patterns.
I am afraid you are not seeing things which are quite clear. We have to keep improving but for the first time in 3 years I feel we have a manager who is also a smart coach and is actually making improvements when he makes a mistake.
And I am afraid, that for some on here, what they want to see dictates what they see. Even though you could have saved you the time typing the last paragraph. I agree with everything apart from the first sentence (even though certainly there is a chance of me not seeing clearly, just as there is the chance that applies to yourself). I am not doubting Ralf, I am just stating that some of the plaudits seem a tad hollow, I had that feeling with some early Ole celebrations as well.
As for the rest: I find it a bit disappointing that Ralf moved away from his actual idea of football to accomodate the squad. If the results turn better and we got something out of the season than I am fine, if not, it might be another bit of wasted time. Can't follow your observation formation-wise, obviously there aren't many differences between 4-2-3-1 and certain 4-3-3 but as long as you are happy with what you see, I don't have any issues. What I see is a 4-2-3-1 with Bruno furthest in midfield but not playing as a striker as he did before. The winger are asked to work a bit more, that it looks different now is probably just as well due to playing Elanga instead of for example Rashford than it is because of fundamental changes.
I also don't see where McTom makes himself more available than before, especially the Westham match he played the same way as we know him. (Which doesn't mean he played badly).
Lets end it on a positive note: I hope you are right, all these changes continue to progress and we will use the confidence in the stabilized performances to become more productive in attack. Ralf focussing on defense first makes absolute sense looking at our xA for the season. But he came with a reputation of attack is the best defense, maybe I hoped he would make that more noticable...