Feather was the beginning of the Boros renaissance in EDH, and Akiri is the next step in that path
Selesnya, Azorius, Izzet, Golgari, Rakdos, Boros, Simic, and Gruul have all had their turn (and Orzhov is next week), so it's time to talk Dimir
The format is all Thragtusk mirrors, decks that lose to Thragtusk, and decks that lose to Sphinxs Revelations and counterspells (Thragtusk mirrors)
You could use it to shut off effects that stopped you from untapping
Efficient removal was present, the top-end finishers were present, but what I really needed was some kind of signpost Boros card that paid you off for making it to the late game, much like what I spent a good chunk of 2024 working to give every color pair in Uro was doing for my Simic decks