re: leader challenges
Not a huge fan of the Faction Kegs... at double the price it's not for me.
While I do like the +50% exp which helps me farm up levels, it has the drawback of seeing a ton of Jan mirror match-ups. (very minor complaint, but still)
I'm more looking forward to hearing about the new faction. Even though the buzz is around Zerrikania which I'm sure they'll do eventually, I'm hoping it's Ofir, since they have the whole 1001 Arabian Nights mythology to draw from. I suggested in forums before, but I hope they do another gwent story like thronebreaker to introduce the expansion.
While I know there are articles about TB not selling as well as CDPR had hoped, I'll be picking it up next GoG sale, and likely just buy the new one when/if it comes out. I think introducing mobile mode will do a lot to swelling their playerbase (although boo for making iphone first).