Perhaps this is a feature that could be added to Warcraft Pets. Allow people to vote on the specific breeds for each pet to help players who aren't sure which breed they should keep, etc.
While this could be very easily generalized by saying, perhaps, all flying pets are best in breed X, as an example...I just don't think that is enough as each pet is unique in its own right.
Along with the ability to vote on pet breeds, it would be nice to be able to add a comment along with your vote as to why you chose that particular breed over another to be your favorite, and comment as to what conditions that pet and breed should be used.
Then, have the results listed in order so we can see the rankings. I'd mainly want to see the rankings so that I could collect the top 3 breeds of pets that have more than 3. I honestly still wish they would allow us to have a maximum of either: 3, or the total number of different breeds if the pet has more than 3 breeds.