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
The combo of Evasive and Ward is quite strong and it makes Stitch very difficult to deal with
Badgermole Cub and Leyline of Abundance substantially increase the mana production of many of the most popular myr
While Wizards new distribution method does accomplish this goal, it appears there are side effects
Pumpkin Bombs is interesting, allowing you to discard two and draw three, one more card than were used to with these effects
As a bonus, Enduring Vitality itself can chump block in combat, die to a board wipe effect, or even be sacrificed without losing its effect, since it comes back as an enchantment