Because of pricing, but mostly the fact that they never come online haha
Along with the above requirements, some Pokemon, such as Raikou V, have a draw Ability like Fleet Footed that requires the Pokemon to be in the Active Spot to use their Ability
Anything with the ability to improve consistency and set up players for a counter when going second is good, but if your opponent has built up quite the impenetrable field with nine or more cards on their field when excavating from the deck, your opponent must shuffle their entire field and Graveyard in the End Phase
If my Active Pokemon is about to go down, I just use Plunge
Add another 4 floors full of pokmon goodies, buying stations, and a tournament area, and youve got Hareruya2, the 6-floor behemoth located just seconds away from the station
On the inside, theres space for up to twelve cards without stretching out