I like your post and I really don't disagree. However I have this theory about the whole clouded force with the Jedi.
The Jedi were no longer serving the force.
The key difference between the light and the dark side of the force to me is this.
The Jedi serve the will of the force, they view the force as a companion and a mentor.
The Sith seek to enslave the force and subvert it to their will
When all the warning signs were there in Phantom Menace the Jedi council was like "Nah, if the Sith had returned we would have felt it". They didn't feel it because they were ignoring the force, in a sense they had become Sith like in that they believed that they were the masters of the Force.
In Clone Wars Obi-Wan and Yoda talked about how the Jedi had become arrogant, even when Dooku plainly told Obi-Wan that a Sith Lord was ruling the Republic, Obi-wan and later the Jedi Council basically said, nah, we would have felt it.
Then the Clone Wars came and the Jedi stopped serving the Force and the Will of the Force and began to serve the Republic as Generals and Commanders. So of course the force became clouded to them, they had lost their connection to it. Palpatine might have pushed on that as you said and helped that shroud come down, but at the end of the day, Palpatine bought the Jedi down through guile.
Now here's where it gets interesting. The one thing that we know about Palpatine was he was not only extremely powerful in the Force. But like Anakin was the so called chosen one, I firmly believe that Palpatine was so powerful that he was the counter chosen one. The son of Satan to the Son of God. But as he got more an more arrogant, we still heard him say "Everything is going as I have forseen", but he forgot the lesson that he gave Yoda in the clone wars "You're arrogance blinds you".
In the end Palpatine's arrogance blinded him. His visions were "Misinterpreted" very much as Yoda thought the prophesy was "Misinterpreted". The telling moment was when Vader announced that he detected his son was with the rebels, "Strange that I didn't feel that". so Palpatine fell into the same trap that the Jedi did. Arrogance blinded him just as arrogance blinded the Jedi.
In the book Revenge of the Sith when Yoda was fighting Sidious he had a utter moment of clarity.
While the Jedi had spent the last thousand years preparing to fight the Sith, they had trained for the last war. In the meantime the Sith in their self imposed exile had not only studied the darkside, but they had studied the Jedi and because of that evolved and changed. The Jedi tried to fight the Sith from a 1000 years ago, whereas the Sith were completely different and didn't just rely on the darkside of the force. They learned to manipulate the system, to use guile and manipulate from the shadows. They didn't fight with light sabres and lightning. They fought with procedures and corruption and lies and plans.
Also the rule of two had a big factor in this change. The Sith had spent a century of study in craving power, each apprentice became greater then their master who was cast aside. Zannah became more powerful then Bane, Cognus more powerful then Zannah and so on until Plagues was more power ful then his master and Palpatine surpassed Plageus. It forced continued growth and evolution.
All out of a desire for not only revenge. But to bring peace and order to the galaxy. That was always Palpatines motivation, and then once he accomplished that he would rule it as he saw fit.
Dark times don't simply emerge, Sidious. Enlightened beings, guiding intelligences manipulate events to bring about a storm that will deliver power into the hands of an elite group willing to make the hard choices the Republic fears to make. Beings may elect their leaders, but the Force has elected us."
―
Darth Plagueis, to
Darth Sidious[src]
Tell me what you regard as your greatest strength, so I will know how best to undermine you; tell me of your greatest fear, so I will know which I must force you to face; tell me what you cherish most, so I will know what to take from you; and tell me what you crave, so that I might deny you…"
―
Darth Plagueis[src]
You must begin by gaining power over yourself; then another; then a group, an order, a world, a species, a group of species... finally, the galaxy itself.”