So, what special mechanic did you enjoy the most?

Ive been looking back at old screenshots of mine and have noticed that it has, after all, been quite a bit of time since the launch of Battlegrounds. And in that period of time we have seen lots of different special features.

I personally have been playing on and off, and experienced Trinkets, Quests, Darkmoon Prizes and Buddies. Each of these were really fun to play around and find and try new and different builds with each of the different options.

I dont know if I missed anything other than Anomalies, but even Anomalies at least seem like a pretty good twist added for the games.

So, I just wanted to learn about you all's experiences with these extra mechanics. Which of these have you enjoyed the least and most? Would you want any of these to return, and get updated for new metas and card pools? Or would you just prefer new mechanics instead? And how would a mode that combines some of these in some way work, in your opinion?