Now to your question, I would like to give idea for a bit more meaningful competition, where not just number of faction supporters matters... (I have feeling, that so far all faction challenges were decided by number of supporters, rather than performance in duels.) That is very delicate matter, which does not have simple solution and could be sensitive to keep balanced, but I will risk it and try.
Playing against the same leaders, especially in this challenge where they were all bad makes it much easier to tech against the meta and rank up faster. It also makes the season seem shorter as the meta shifts mid-season from these challenges and then shifts back.OK....I'll say it. Has the Gwent Team given consideration to perhaps making these challengers only for Casual mode?
-Category challenges (elf, dwarf, human, beast, etc...) ¿whit 13 o more cards of the chosen type in the deck?
How about something along the lines of a Scoia'tael Mahakam challenge, wherein players must include as many Dwarven units in their decks as possible, with a minimum of elves and dryads? I'd be curious to see how that might play out.