I’d like to come back to an idea, that I had last month with the disappearing troop bug:
A single player full week event, where you fight enemies of rising strength, but can use one of every troop and weapon for only one single fight. Rewards should preferably be through guaranteed gnome encounters every couple of fights (including Cedric). No tokens; you can keep going until you are empty.
You can use gems for potions, as well as to re-unlock your troops at an increasing cost per piece.
I imagine some fun strategic elements in this. How long can you handle fights with less than a full team. At which point do you need to bring out the “big boys”, and in which order? Which setups do you save your converters for?
Due to the insane amount of fights, this can lead to for advanced gamers, I really think, it should last a full seven days, and should not be available every week. But going through this every two months or so would make a fun addition.