you can always swap their PWT teams, their sprites, and their text.
/a/2/9/1 - PWT Board Trainer Sprites
/a/2/5/2 ********* (120 * <16 byte files) ...
/a/2/5/3 ********* pwtpoke2 - 1000 files, first bunch are for PWT (second set)
/a/2/5/4 ********* pwttr1, 68 files - world tournament trainer pkm choices 1v1
/a/2/5/5 ********* pwttr6, 68 files - world tournament trainer pkm choices 6v6
/a/2/5/6 ********* pwtpoke - world tournament pkm sets (first set)
probably better to do a custom download tournament instead, you can create your own with PikaEdit