Building a deck with two Inks that complement each other well and which has a clear gameplan is one of the key elements of not just this, but most, trading card games
You want as little white as possible
If there's a cost associated with having it attack, its controller isn't forced to pay that cost, so it doesn't have to attack in that case either
None of the other commanders with partner are this good, so far
Or if they're going to claim the ban list functions the way it does, at least add more things to it so there's more balance in options
Bria, Riptide Rogue and Adrix and Nev, Twincasters are two commanders that leverage these effects well as they apply loads of pressure with their wide board states