If they looked now, they might be shocked at how much the price of some of those cards have gone up
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The time had come to split competitive and casual play, allowing players to self-select their experience and enabling us to better steward the format for both groups of players. As that quote implies, diverging banlists are the main tool by which Wizards intends to sculpt these two versions of Brawl
Now to be fair, I actually find companions like Lurrus of the Dream-Den extremely fun in Limited, Cube, and even Commander, but their impact on Constructed formats is one for the history books
Even better, Sword of Wealth and Power makes a Treasure token when the equipped creature deals combat damage to a player, and then you get to copy the next spell you cast this turn