Was reading IG and Kit threads and thinking about the mechanics of keeping decklists secret.
To what extent is this even possible over time? If you play a deck in a tournament each individual opponent may see 20-30 cards, and by random sampling your group of opponents over the tournament will see more. Most of your deck’s plan is going to be on exhibit, and you might hide some 1-ofs or tech cards on a per-opponent basis. And of course people won’t know if you are playing something as a 2 or 3of etc. But if the deck is just stomping people this will get figured out by motivated players worldwide.
Related question, what is the assumption of ethics of a TO collecting decklists? In Netrunner this is generally left up to the players to post afterwards, so I think that is a reasonable guideline for the TO to follow to prevent surprises.