Looking to upgrade my Rog-Si turbo deck, looking for suggestions

I'm thinking of taking out some cards to bettter optimize my deck.
Some context with how I've organised my deck in Moxfield, sideboard are cards I'm thinking of putting in, while considering are cards I want to take out. Feel free to defer from my lists, though. I haven't played that much CEDH, and welcome everyone's input.

Currently, the swaps I'm set on are:
- Hexing Squelcher is replacing Conqueror's Flail
- Vexing Bauble is replacing The One Ring
- Will of the Jeskai is replacing Dramatic Reversal
- Gitaxian POrobe is replacing Brainstorm

An important note, I'm not necessarily taking out City of Brass, but I need to cut another land, and it's either that or Raucous Theater. I'm also debating over adding Christal Vein to the deck.

Welcoming all input.
Moxfield link: https://moxfield.com/decks/SC7nlupA-EGsPYVc8u2f0A