Mimic Vat
I am not sure I am doing a great job of that right now
Even in the English metagame we had differences: Blue Doflamingo and Katakuri worked well alongside the tier 1 decks (Zoro, Law, Newgate) in America, in Europe we had
I think the one thing I would've liked to see more of in the list are summon cards: if you look at our commander options, Tidus, Yuna's Guardian and Yuna, Grand Summoner, both clearly work exceptionally well with the new summon creatures like Summon: Valefor as Tidus can remove lore counters to keep them around longer and Yuna can pump up creatures when the summons die, and that's a unique new game design space that would differentiate the deck from more generic +1/+1 Counter lists out there
Not that you would want to do that very often, but it was an option and while the Bestow costs were relatively high, they were otherwise cost efficient
The Magic: The Gathering secondary market is nothing if not unpredictable