The EDHRec podcast episode on mana rocks put me onto Cursed Mirror and Skyclave Relic. I still like Gilded Lotus enough to keep it for now.

On review I realized Red is lacking ways to deal with creatures, so I'm replacing Stolen Strategy with a Chandra that can serve a similar role.

I hear The Scarab God takes over late games, so while it hasn't been amazing in my testing I'm trying it out.

I think UR just wants an Izzet Charm or Prismari Command - I'm adding the cheaper and more widely-played one for now.

Reconnaissance Mission supported a Jeskai tokens deck that has gone fairly undrafted, and the Tuvasa deck doesn't really want that effect, so I'm swapping it out for the much cheaper and more generally-useful Wizard Class.