My cube also runs a bit like a four color cube. You're gonna be black, but what else will you be? It enables black to contain all the semi-poisonous 2/1s for 1 that only aggro wants. All decks have access to black's important tools, primarily removal and card draw. It revolves around the expectations of what black can do. It also runs a lot of color hosers as choice removal spells, something you'd never want to see in retail.
When you do the slightly imbalanced thing, sucking cards away from white and green and buffing black, that gets a lot messier in my mind. Gx and Wx are much harder to play. Bx gets fought over more but doesn't have the necessary B to support it. Some of the old GW hosers look like they can totally ruin a B deck's day. And I think you'd thematically kind of want those hosers to highlight the opposition you're creating, but it's not beneficial for the environment most of the time. My cube is basically the only exception to that.
Depending on your power level, we might have a lot in common when you do this.
When you do the slightly imbalanced thing, sucking cards away from white and green and buffing black, that gets a lot messier in my mind. Gx and Wx are much harder to play. Bx gets fought over more but doesn't have the necessary B to support it. Some of the old GW hosers look like they can totally ruin a B deck's day. And I think you'd thematically kind of want those hosers to highlight the opposition you're creating, but it's not beneficial for the environment most of the time. My cube is basically the only exception to that.
Depending on your power level, we might have a lot in common when you do this.