I feel like chichoo and nobody improved a lot since their initial debuts. 2023 to 2024 tenz improved a lot. Cauanzon has been constantly getting better. Munchkin had a huge improvement last year. For 2025 Keiko if he keeps up his kickoff form, and Dgzin if you count him (2023 he was not this good but he spent 2024 in t2).
I think it’s because the level of pros is generally close than it looks and it’s a lot harder for a player to suddenly jump up in skill level when everyone is constantly improving. The biggest jumps in my opinion are when good players change their roles and look more comfortable. Also I think t2 emphasizes individual improvement where as t1 looks at good individuals to improve their team play.