If anything, I think the history of things like phyrexian mana shows that Wizards does learn from their design mistakes
Aetherworks Marvel defined its Standard format when it was used to put in play one of the best of the Eldrazi titans, Ulamog, the Ceaseless Hunger, ahead of time, effectively ending the game on the spot, but its a bit more of a roulette wheel in Commander

Aerial Formation Ajani, Inspiring Leader Akroma's Will Akroma's Will Appa, the Vigilant Archetype of Imagination Bahamut, Warden of Light Bane's Invoker Basri, Devoted Paladin Bleeding Effect Concerted Effort Cosmic Spider-Man Crown of Ascension Elspeth, Storm Slayer Elspeth, Undaunted Hero Flying Crane Technique Frostwind Invoker Gempalm Sorcerer Ghost-Lit Drifter Goblin Balloon Brigade Gustrider Exuberant Harbin, Vanguard Aviator Invert the Skies Iron Man, Armored Avenger Kinsbaile Balloonist Levitation Magnetic Flux Moonshae Pixie Moonshae Pixie Moonshaker Cavalry Nephalia Moondrakes New New York Phantasmal Form Rishei, Getaway Accomplice Scions of the Ur-Spider Seascape Aerialist Skyshaper Storm, Windrider Stormcaller's Boon Striding Shotcaller Ten Wizards Mountain The Wind Crystal Thunderhawk Gunship Triceraton Commander Victory's Herald Voyager Drake Vulture, Scheming Scavenger Web Wind Sail Windborne Charge Winged Sliver

Win four matches a day, complete one quest, and you will earn enough to draft about once or twice a week regardless of your event winnings