I have no idea why I just came up with this, but I just realized that it would potentially be a fun idea (and it might already exist, but idk):
A Deck Builder Board Game inspired by Draft Play & Cube Drafts. Said game features a core set of cards that constantly sees print, as well as a bunch of expansion sets that allows players to add some spice to their games. Players can then tweak ratios and cards around between Core and Expansion sets. Custom Rules can also be made and/or included in order to add variety to the games (like banlists, Commander-Style bonus-cards, and any other house-rules).
I don't really play with a lot of people IRL, so I never had a chance to play a TCG in a Draft-Style format. I've built Cubes before, but I never had the capacity play them with friends or family. With a Board Game that's built around this style of gameplay, you'd be able to build all the joys of a TCG without needing the buy-in of a bunch of starter decks and maybe a few booster packs to get started. Perhaps it's a bad idea to formulate a Board Game under the rules and ideas of a Card Game, but Deck Builder is literally a genre and the one game that focuses on Draft-Style Gameplay (Keyforge) features far too many tokens and trackable tokens for the idea that I have in my head.