[deathemperor]

k
did you do these below yet ?

+ Levels of existence (sick, tired, hungry, bored, etc.) w/ different pet images for each of those.
+ Store integration with different Store hacks as those store hacks become available. This would give the possibility to buy things such as toys, treats, clothes, and other fun goodies.
+ Pet battles.
+ Pet of the month.
+ Abilitiy to interact with other users pets. IE pet them, feed them, play with them, etc.
+ Pet sitting. Allow friends on the boards take care of your pets if you will be gone for a while.
+ Animated pets. Possibly via Flash.
+ Pet Development Kit (PDK) - would allow Admin's to create new pets.
+ Ability to create forum-specific pets and behaviors.
+ Pets could occasionally get loose and visit other members.
+ Ability for users to turn off the display of all pets. Similar to turning off the view of avatars and sig's.

or even more than this ? ^^