Narset should've been restricted. Not every deck can jam enough planeswalker removal to keep up with decks that use 3-4x Narset, especially with the miserable new Teferi. Narset is also just awful to play against, regardless of how 'easy' it is to remove it for some decks.
Good stuff. I think the quality of games would improve further if we restrict Narset and Karn, in addition to the proposed changes. Narset is boring to play against. Karn is boring to play, and play against.
I remember seeing Sharazad in an old school list and wondering why it's still banned in vintage, when there are so many other cards in the format that require a long time to do their thing. Chaos Orb, using Eternal Central rules, would also be unbanned if it were up to me.