Tarkir: Dragonstorm has five Commander decks: Abzan Armor, Jeskai Striker, Sultai Arisen, Mardu Surge, and Temur Roar
It massively increases demand and can lead to significantly higher prices at auction and in private sales
Once you become entrenched enough in the game and you become aware of the tools that are available to you, it is foolish to not at least consider those tools when you are trying to assemble a deck
My final advice would be: use the basic frame structure as a constraint (limitation breeds creativity, Mark Rosewater says), and if needed work from there to create new details that are really meaningful for the game, and be more careful not to create more noise
While not being able to compete on board is a very real issue in drawn-out games, Codie can often close things out quickly enough that this isnt a problem