I get the feeling that Sacred Sword of Seven Stars going back to 3 is an indirect boon to the new archetype Kozmo.
I'll go over some key points. I like the list, by the way. Don't buy into the salty reactions, it's a good start!
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Djinn Releaser of Rituals -> This card simply needed to go. If there is one thing Konami hates, it is when people are unable to play the game.
Shurit, Strategist of the Nekroz -> Let's be honest, we knew this was coming. Rather, people probably expected the hit to be Unicore. That did happen, in the OCG. It didn't work. Konami evaluated this, and I support trying to do something that will work.
Lavalval Chain -> Anyone who says this wasn't hit because of Clown Blade is pretty silly. This card wasn't the ultimate perfection that people made it out to be, but it does stop a lot of unnecessary plays that nobody has time for in the game.
Dragon Ravine -> Bring it back, we don't need it gone anymore.
Trishula, Dragon of the Ice Barrier -> 3 years overdue, if you ask me. Thank Sophia I will finally get to put this majestic card back in its rightful place, hopefully for good.
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Some other points... Still no erratas of certain cards, and that's a shame. Not at all relevant right now, but Konami should really consider putting Crush Card to 2 or 3 when a certain card that needs it specifically is released.
I know it's still kind of early, but I do hope that we do get that errata for the Dragon Rulers, one that restricts them to attribute only.