Okay, one of the things that the Gym set does is revive a long overlooked
color, Fighting.  Why?  A whole lot of Gym fighting pokemon have ways of
avoiding resistance.  One of these ways is through the Nivi City Gym stadium.
 Here's the stats (translation from Edo):

    Nivi City Gym
    Type:  Trainer (Stadium Card)
    Effect:  Don't apply Resistance for the Defending Pokemon when
      a Brock Pokemon attacks.
      (This Stadium card stays in play for the entire game.  If
      another Stadium card is played, discard this card.)

    Well, a lot of Brock's pokemon are relatively heavy hitting fighting
types.  This stadium allows them to fully utilize that power while
fighting-resistant pokemon like Scyther are paralyzed by their loss of
resistance.  The only downside is that there will be plenty of other stadiums
out there, and once another stadium is played, the resistances return. 
However, this might be a lifesaver for all those who love fighting types, but
are afraid to use them due to the common resistance.

                                                    -Foss, the Magikarp
trainer
                                                    AKA FossilMagikarp
                                                    email: Edestus360@aol.com