Realistically, there's only 2 players you can make an argument for the GOAT status after champs 2024: Zmjkk and Aspas. In my opinion, your GOAT really depends on what you put in a higher regard between peak and consistency.
The peak that Zmjkk just reached is something we've never seen prior in this game. He went +39 in a Champions Grand Final, breaking the BO5 kills record with 111 kills. Easily the greatest series from a player ever.
Aspas' consistency is just as unmatched though. Winning Champions 2022 as finals mvp, finishing 3rd in 2023 AND in 2024 as the best player of his team, the only player ever to do that. (the guy has 1.046 kills ONLY in Champions).
My take is that we should wait for 2025 to settle this because i feel like we'll definetely get our awnser next year.