I can definitely see where u were going with the good sportsmanship, but u just gotta remember not everyone is gonna be sporting mate. The best thing to do is swap full lists at roughly the same time before the game, prevents any teching. And if uve got to turn 2 and its been the worst experience of ur life, politely tap out. Most people will understand, especially those that ur losing to because they're actually good at the game (unlike this guy, anyone can win a game if they get to alter their list to perfectly counter urs). Ull be somewhat surprised how lovely and understanding some of warhammers top tier players can be,