I actually thought of Wanda's reaction as neither anger nor elation. More as just plain confusion. I got the impression that most of the leaders in Erfworld are more concerned with unit strength than most special abilities. That is to say, a surgical strike against weaker, support-type units would never have even *occurred* to either the Tool or Wanda. Just as it didn't occur to Ansom. (By the way, what happened to Vinnie that he's such a think-outside-the-box type of guy?)

I don't have any evidence from earlier comics to support this theory (and won't look...too lazy), just an overall impression of the characters themselves. Everyone else has been amateurs on this playing field. Very straight-forward. A new chess player will never understand that sometimes taking a pawn is more important than taking a bishop, and thus will never consider it. A master, will. And the amateur will never see it coming until it has already happened.