Mall-O-Matic (Level 2012+): Introduce it here; being relatively harmless and easy to destroy, it works perfectly to liven up early levels.
Color Cluster (Level 6001+): Introduce it here; it acts dynamically as a blocker that interacts with Jelly, Rainbow Rapids, and obstacle dispensers to help beat the level.
Wonderful Wrap (Level 8567+): Its moderate difficulty to destroy and great reward make it ideal for more challenging levels.
Candy Cobra (Level 9093+): Reserve it strictly for advanced levels. If it appears too early, it clears the board too quickly, detracting from the fun.
Chameleon Candy (Level 11124+): Bring it back, but with a better purpose so it feels less annoying. It should appear only for specific level objectives (like clearing Jelly, completing Rainbow Rapids, or collecting regular candies). It would fit perfectly alongside the Wonderful Wrap, forcing players to strategize to unlock those special rewards.
Crystal Counter (4596+): Bring it back, along with Crystal Layers. To increase the challenge, these counters should be hidden at the bottom of the board or under multiple layers, forcing players to clear the path first; from level 9054 onwards, include a dispenser for this blocker.