I've been considering this one for a little while and technically, I'm still experimenting with it, but here's what I got so far. A Chessmon Archetype deckbuild, that focuses on trading Digimon on and off the board in order to build up to a strong board pressence to make the best use of QueenChessmon. With some of the new cards from ST19, we now have ways to draw more cards and fill our Trash so we can use more powerful effects on the field once we hit the magical #8. To help further support it, we have Angewomon ACE and ShadowSeraphimon as a means to provide a quick answer for when our opponent tries to go aggressive. There's also a ShineGreymon: Ruin Mode for when we need to breakthrough our opponent's defenses. Might change it up a bit, but this is what's going on.
