I think you should update the crown series to 8 decks, and add the CARC decks, perhaps the NOCs, Seasons, 50s, 60s, 70s and 80s party starters series, maybe the Walgreens series (new, old studs and the new play right cards), the tally-ho series: vipers, red, blue and black circle and fan back and the green circle back, heritage series 3 from T11, Monarchs series (normal, white and gold), JAQK, Steampunks (copper and silver), Vintage design series (the 12 deck series from Bicycle), Stingers (red and black, old and new), the donation series? (the 3 cancer research decks, the alzheimers association deck, the wounded warrior etc, the Fulton's Series (chinatown, clip joint, ace fulton), the Vintage Plaid series, the CCC series (Brimstone, Quicksilver and the one after that mentionned by Russel...
The list is long.
What's a bit too bad about these series is that it's easier for me personally to vote for those with the greatest number and value rather than to vote for the ones I like best.
I voted for Crown, S&M, and Karnival (which you should also add 5 or so decks to...).
Arcane, Artifice, Split Spades, Color collection etc came close behind. I think it would be funner if we could vote for our top 5 rather than 3. Personal preference.