
So first of lets get it out of the way...
Who's a good lil pack of puppies, you are! you are!
Okay now that is out of my system we have a card here that does a very very nice pair of things "handless 2+ damage attacks" and "high speed movement for one action" notice that both of these only actually require two dogs to be in play to be good, once you have three dog's in play you start entering sweet territory and at four dogs....well that's about 1 enemy per scenario survives you whistling to your dogs.
Getting 12 resources worth of dog into play while also having the ally slots to hold them is a big ask. it is made a lot easier by calling in favors (which also will probably grant you some amount of restored soak) and any other support cards we might see in the future for allies seems good.
Now I am going to say something shocking here, I don't think Leo Anderson is the best dog handler, that is to say, I don't think he receives the most benefit from having them in play, I foresee these dogs going a long way to supporting more non-guardian fighty decks, those that struggle with their class options weapons being too niche and too situational to be consistent enough to be worth running, you can use your dog's to fill in the gap you might be missing.
The other case I see the dogs being insanely good in are primarily or flex clue decks that have decent enough time with their fight stat, people who will use the dogs primarily to get them across the map and occasionally chomp on an enemy that would be too annoying for a guardian to come deal with. Minh has no issue boosting any stat to any number but she can't capitalize on that without weapons, now she can just run a bunch of happy doggies instead, I never found Minh dependent on any ally before so losing the slot isn't a major deal, she also draws at an obscene rate so getting to the two doggo minimum is pretty simple for her.
Can't wait to play with them and hopefully my theories to their usefulness don't fall flat on their face.
The last thing to highlight here is you CAN (with some great deal of luck) have 14 doggo's in play at the same time under your control, how you achieve this is left as an exercise for the reader, good luck! (bonus star for anyone who figures out how to get more, no matter how hair brained the method)