Just out of curiosity, what do people think about swapping decklists prior to the top 8 to try and mitigate the advantages that teams and scouting can bring? This has been used at some big T1 events - should it become standard practice?
I don't like giving out decklists as then there is 0 element of surprise. I liked what SCG did for one tournament which was giving the deck archetype (Slaver, Stax, Dragon...).
There's no easy answer to whether or not to do decklist swaps. Believe me, it's talked about a LOT by judges during constructed season. Doing them gives some players an advantage (as mentioned above, players with Meddling Mages, Pithing Needles, etc., as well as other players) and not doing them gives other players an advantage. (players with teams to scout, or players playing very fast decks who have more time to scout during rounds than others playing slow control decks.) So, it's a very debated topic, and there isn't an easy answer one way or the other. As for giving deck archetypes, that would only work for
unsanctioned Vintage events, and even then, I think it's a really, really bad idea. Especially when you get decks that are new, or rogue, or difficult to classify.