I agree with this so much. I think the story telling of this fell short, for various reasons though. It seemed jarring in the end when Anakin flips, and I think it should have been something we saw coming, or rather, understood why it happened. There was a chance there to show that Vader wasn't wholly evil, but he merely chose a side, and that side included working for someone evil.
It's a shame some of the types of conversations that Anakin had with Obiwan in their Marvel comic series, didn't make it in to the prequels. A little bit of chat where Anakin questions the Jedi Order would have told the story better. A certain scene where much frolicking in the meadow was going on, would have been a good place to put that conversation.
I think based on the prophecy of the chosen one restoring balance to the force, Anakin's fall to the dark side, the Bendu in Rebels, and the new trailer, all the talk of balance means they are clearly moving in the direction of abandoning the dogma of both only using the light side, and of the rigid and emotionless lifestyle of the prequel Jedi.
While it may be jarring to some, I think it's sort of necessary, from a story telling stand point. There isn't a lot of character development to be had, for a character that has no emotion. I feel like the very plain light vs dark, good vs evil angle has sort of ran it's course. I think the modern movie goer has changed, and they prefer more complex characters than they did in the 1970's.
Also, when comparing the IP to it's competitors (arguably Marvel MCU and DC), the powers of the classical Jedi are sort of weak sauce. I could not be more tickled by Luke's line in the trailer something to the effect of, "It's so much more than that". I would love to see a great expansion of Jedi capability, because it just looks cool. I also think they did so much more with the force in the EU, than they have done so far in the films. Pretty much everyone gets a saber, a force push, and some ability to land softly from up high. I think the lore has room for a LOT more than that, given force lightning and mind reading are a thing. Plus, the Jedi could just use a visual upgrade, given the newer capabilities of digital effects.