I agree. Creative does put a major imbalance in the server - while it is inevitable that players will reach that stage and TPS will decline, it is not fair that someone can spawn items in and kill early game tps making it harder for others to progress. I think the seperate creative server is the best solution but would take more money from the owner's pockets. Second best solution is to remove the rank and refund the players for what they bought. The building only solution is interesting, but would still require a compromise for the user who paid money for their perks. While creative would be fine in other modpacks, it does not belong in a pack like GTNH which is so solely focused on time-consuming progression.