While your response to this situation will depend mostly on you as an individual, with some people not caring at all and others caring a whole lot, at least some percentage of players would feel like the Top 8 (and prizes) were stolen from them
The mirror match is the only matchup where I found Ghost Quarter good enough, particularly on game 1, where the deck doesnt have basics, but past that, the card has been mediocre to me
Pokemon card conservation is an art in itself
It could excel in decks that care about counters, like Standard Mono-Green Landfall, but cheaper protection effects, like Snakeskin Veil, will likely be better
There, it can be pumped up into a game-ending threat in just one turn and obliterate the opponent with ease