I try to have a variety of power-levels in the actual decks. We've got 11 shops in town, so I have decks I will or won't bust out based on what shop I'm at. I also keep a little "sideboard" of cards with some decks to adjust their power-level. Like, Hakim I sideboard the Treachery in or Out depending on whether the folks at the store are cool with relatively consistent infinite combos. I only have a handful of cutthroat edh decks, because that's just not how most of our locals enjoy the format. The majority of my decks are 75% decks with a theme or goal in mind. I like taking a shitty theme (like Fight cards), and trying to push it to respectable.
Things that catch my eye for new set Partner commander combos:
Akiri+Bruse: Red/White Equipment Double Down. Play some Swords to pump Akiri, give Akiri Double Strike and Life Link, do Boros things.
Kydele+Thrasios: Gogo Two Card Infinite Combos! Especially when one card starts in the comand zone, and so does your payoff card... Bit of an upfront mana cost to get running if you don't have other card draw effects, or Heartstone/Training Grounds. Draw your entire deck, then stroke the table out with blue sun's zenith.
Ravos+Tymna: Probably worse than Ayli for Cleric Tribal leader, but an easy-access anthem is welcome, and you can cast both of em for 4 mana with an Edgewalker out.
Reyhan+Silas Renn: Double Dipping Modular Bullshit Deck

Get that Arcbound Ravager out and make combat math impossible.
And Sidar Kondo and Ikri Shadiqi are definitely going into Doran Butts Tribal.