As for the design process, Dragon Shield made it extremely simple and intuitive
For example, if you sort by alphabetical, your favorite decks will be sorted alphabetically, followed by the rest of the decks in your collection (also in alphabetical order, of course): Last Played will sort all your decks based on how recently the deck has been played, starting with the most recent and going backwards from there
I wouldn't bank on this being playable
Repurposing Bay This is literally just Birthing Pod for artifacts in blue
Halana and Alena, Partners Weve had plenty of recent commanders that can take advantage of Halana and Alena, Partners and its +1/+1 counters theme
Generally speaking, there should always be more cost 1 cards than cost 2 cards, more cost 2 cards than cost 3 cards, and so on and so forth