I really like your version of events. Especially how Anakin dabbles with Sith knowledge for a while before fully committing to it. It fits better with the idea of Anakin being seduced by the Dark Side rather than just being duped into it.
For a while, I considered cutting out Anakin’s discovery by the Jedi altogether, and just having him start as a padawan or knight at the beginning of Episode I. But I decided it is still important to show Obi-Wan meeting him for the first time, so I’ll have their meeting occur very early in the movie. And midway through, Anakin will already be Obi-Wan’s padawan, at least in an informal sense. Anakin will be nineteen, and an indentured servant living on Tatooine, when Obi-Wan meets him. Anakin ends up saving the day at the end of the movie, and is celebrated on Coruscant as a hero of the Republic.
Anakin can be knighted early in Episode II. Make it clear that a lot of people look up to him, but that the pressure of that is starting to get to him. He tries to put up this front of a stoic, selfless hero, but privately, he’s wracked by self doubt and PTSD. He tries to hide his problems, but the stress of the Clone Wars and all the death he’s surrounded by is keeping him up at night. Despite that, the soldiers under his command have great respect for him, and Anakin is shown to have a stern, commanding presence and a strong tactical mind.
Anakin’s mother dies near the end of Episode II, in a way that Anakin narrowly fails to prevent. Anakin goes into a whirlwind of emotion, and almost massacres the people responsible, but is stopped and calmed down by Obi-Wan.
Either at the end of II or the beginning of III, Coruscant is attacked and large swathes of the city are destroyed. Anakin and Padme work to rally the planet’s defenders, but Padme is then injured in the attack and is bedridden in a hospital. This throws Anakin further off balance. Anakin fights Darth Maul in the Chancellor’s office, and Maul taunts Anakin about how everything the Jedi have fought for is crumbling around him. Maul then senses Anakin’s distress about his wife, and taunts him about how she will be dead soon. This causes Anakin to finally snap and overpower Maul in a fit of rage, killing him as he begs for mercy.
From this point onward, even though Anakin isn’t technically a Sith yet, he’s already essentially on the Dark Side. When we see him again in III, he’s leading a bloody campaign of vengeance against those responsible for Coruscant. He’s soon expelled from the Jedi Order for committing war crimes and being driven by hate and revenge. Instead of Anakin becoming more unstable or fiery as he turns to the Dark Side, he becomes callous and cold. A ruthless general of the Republic/Empire.
It’s then that, per Palpatine’s subtle suggestion, he begins to dabble in Sith knowledge, looking for ways to destroy the enemy and end the war. He learns that Palpatine is planning to have the Jedi killed to solidify his power, and he decides that this is a necessary evil to restore order to the galaxy, and that the Jedi have become a liability, so he agrees to go along with it. When he confronts Obi-Wan on Mustafar, neither of them wants to kill the other. Obi-Wan begs Anakin to come back with him, while Anakin demands that Obi-Wan stand down. So with that impasse, they’re forced to fight. And you know the rest.
I agree, seduced by the dark side not duped. That is the problem with The Prequels, all the Jedi including Anakin are to quote Lord Malgus, “deceived.”