Guild Wars 2

I think that the minipet system has a lot of potential to benefit both Arenanet and players. Arenanet could give value to minipets by creating a minigame that utilizes them. This will allow players to collect them and increase their market value while at the same time, Arenanet could monetize some of the rarers (cool animation and junk no special abilities) just like in LoL.

Here are the type of minigames I envisioned.
A Yu-Gi-oh style game: Probably the easiest to implement just give them attack/def points.
Polymock from gw1.
Maybe a poor man’s version of LoL or Dota.
Sandmancer minipet game.
Chest game where minipets are chest pieces.

Pokemon?

Polymock.
/15char

edit: actually pokemon as well if they wanted to go down that route. sorry for the misunderstanding.