I really hope the answer is no. Or if they do add troops to the drop pool, make a rework so that it’s not Cedric who drops troops but rather one troop is guaranteed per vault key. I used ~70 vault keys to get Soul Gnome. Even lower drop % would be an insult to players who wish to collect everything. Not the first one though (Sol’Zara and Zuul-Goth are not forgotten).
But as nothing is for certain, I will keep on stockpiling, just like any other resource in game. I hope they keep on adding new currencies to stay #1 in “different resources in one video game” leaderboard. Six colors of candy, six colors of marbles, six colors of unicorn feces, keep em coming please!