With the commander being so open ended, you can really build it however you want
One alternate idea is that duplicate cards could be exchanged for Pack Points , taking priority away from the Flair feature
#7 ^ Or maybe this rotation is synced with Japan's January(as opposed to the non-Japanese September) rotation, given the regulation marks started w/ Japan, but didn't make it across the Pacific until Sword & Shield's D block, so maybe this upcoming rotation cycle, both regions' rotations will happen at same time
Trading Your Cards If you're trading with someone, the two most common websites used to price cards are Star City Games and TCGplayer
Each may appear in Set, Draft, and Collector Boosters, in traditional foil and non-foil