Other Maze's End decks could use 5-color commanders like Child of Alara to control the board with wraths until you can assemble your gates, or Garth One-Eye to consistently cast Black Lotus into a pile of ramp to get all your gates out at once
We dont need all Merfolk, but we do need some
Players focus on generating energy quickly and spending it to fuel creature buffs, card draw, and damage output
Now, thats not to say you cant still try and come up with your own special Standard sauce
Then again, you might be running a spell slinger deck, with lots of cantrips like Stella Lee, Wild Card, where you want to filter through your deck, draw cards, and stop people from getting there before you combo off