So… I don’t want to say that we will NEVER need excess troop cards again, because I don’t have a crystal ball to see that far ahead.
We don’t have anything PLANNED in the next 3-4 months that will require excess cards, but the possibility is always there (as Pasa says) that we may add another rarity one day in the far future. That’s the ONLY reason I could imagine requiring more cards though… there’s enough things to improve on a troop now without adding an extra system.