Just my two cents, I like the decisions made here more the more I think about them. The Nicodemus errata is very well done, he is still very useful in a variety of decks and situations, but he is no longer a solo win condition. I am a little sad about Showboating being banned and not getting errata, but I understand why it was done. I hope that the rules team will consider issuing errata for Showboating (maybe remove from game after use, ala Meet the New Boss?) and unbanning it in the future, but I think removing the card is the currently correct decision for the health of the community.
Let's be honest here, the decks that made these cards negative play experiences (specifically Spirit Fortress and similar) are not nearly as effective or prominent as they once were, but they are still not fun to play or play against. If this ban and errata brings players back and reduces negative play experiences, I'm all for it.
@SavageJack I totally agree on feats being neat, seeing more would be great. I think it could be really interesting space for support cards in a variety of archetypes, especially gadgets.