As someone who played through that, I thought it was a pretty faithful representation, and liked the RPG aspect of it
Being able to protect your commander is invaluable, but you dont always want to play Lightning Greaves in decks where you might need to target your commander and you might not always need haste
Since nearly every character card interacts with Puppy cards, bringing a ton of them ends up being really strong, as you will get value out of everything in your deck nearly anytime you use a card
Note what lands and monsters in a Commander deck worked well and what didn't
While many sites have English options, the best results often come from searching in Japanese (Source: Here is a quick cheat sheet to help you buy trading cards directly from Japan overseas: Pokemon Card: One Piece Card: Yu-Gi-Oh!: Booster Box: Single Card: Sealed / Unopened: Near Mint / Beautiful: Using these terms on sites like Mercari or Yahoo
Harness sci-fi tech with Fallout Commander Deck: Science