The problem is, you rarely know who, exactly, you are going to be matched up with, even if you issue challenges. This means that at least one of your technique rows must be dedicated to "Opponent is Slightly Active" in order to insure that you do not inadvertently opt for Counter-Attack or Parry/X against a Tank. That's not so much a problem, I guess, as a nuisance. Particularly when you are at lower levels, and haven't opened up too many technique rows. Requiring that one of those rows be constantly set to "Slightly Active" limits the lower level fighters quite a bit.