My suggestion:

Introduce a level dependency system between related skills. For example:

To level up to Tier 3 Cooking, you must have at least Tier 2 Farming and vice versa

To level up Mining, there should be requirements in Metalworking and Stoneshaping.

Similarly, Forestry and Woodworking should be connected in terms of leveling requirements.

This would prevent players from neglecting certain skills—for instance, having Tier 4 Mining but only Tier 1 Stoneshaping and Tier 1 Metalworking. Additionally, this system could reduce bot activity by requiring more strategic skill development.

Apply the same level dependency system from the previous topic to the task board as well. For instance:

If you have Tier 4 Mining but only Tier 1 Metalworking and Tier 1 Stoneshaping, you should only be able to access the Tier 1 Pixel tasks for Mining, due to the dependency threshold.

This would ensure that players can't just power-level one skill while neglecting others, creating more balanced progression and further reducing bot usage.