Hopefully they'll fix the pets so they only come in one breed. They've done this before in similar situations. The problem is that there's a risk they won't hotfix existing pets, thus permanently lumping early collectors with substandard breeds. I can say this is a realistic worry because they've done it before: the Brilliant Kaliri (unique) from the pet collection achievement reward originally came in multiple breeds too, and when they hotfixed it to a single breed they very consciously left existing/early collectors with the breeds they already had, meaning some players were permanently stuck with substandard battle pets. Players who worked the hardest at their collections ended up disadvantaged for it, though it was only one pet out of many hundreds.
So if you're buying Deadmines pets there is a risk of this. Maybe it won't work out that way, but personally I won't be buying those pets until I know what they intend. But if you're not concerned about breeds then go right ahead
