No, it has no worthwhile uses
I never felt overwhelmed by the missions the game threw at me, and, if you have a completionist mentality, these are easy to get through during the main story without things feeling stilted
WHERE THE MAGIC IS HAPPENING DOCUMENTATION Comprehensive guides for setup, usage, and advanced features
If youre trying to make a rogue deck work, for example, you have to be able to withstand some of the most powerful combos in Pokemon TCG Standard history such as Regidragos Trifrost (combined with a potential Cologne and Prime Catcher) or Palkias Dusknoir (potentially KOing Manaphy) + Moonlight Shuriken not to mention the raw power of something like Lugias Iron Hands
In terms of new additions to the list, we have the Sun & Moon Forbidden Light, Generations Elite Trainer Box, and XY Primal Clash