I'm not sure what the desire to play around with these sorts of effects is, because they're either immensely annoying, or they win on the spot with the right set-up
This cards price once put it beyond the reach of many players
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The longer Heroic Outlaw stays in play, the more it can help, or be a threat.
Creature kill was just so bad against him game one, but even if they know his sideboard plan, how much creature kill can they leave in for just two Baneslayer Angels
These cards dramatically warp commander games, whether having players run away with resources, shift in ways many players dislike, cause people to not be able to play the game, really efficiently search for their strongest cards, or commanders that tend to be only built in ways that take away from more casual games