What is NOT an objective of structural pruning in the landscape?

Structural pruning primarily focuses on improving the overall framework and strength of the tree's branches, which involves establishing a strong central leader and a well-distributed branch structure. The goals of structural pruning are to promote healthy growth patterns that will minimize future hazards and maintenance needs.

Thinning the crown, while it can be a beneficial practice in certain contexts, is not an objective of structural pruning. Crown thinning is usually aimed at reducing leaf density to allow more light to penetrate through the canopy or to decrease wind resistance, which are different objectives than those sought in structural pruning. The other objectives, such as developing a strong branch structure and managing weight distribution, directly relate to enhancing the tree's long-term health and stability. Enhancing overall appearance can be associated with aesthetics and doesn't specifically contribute to the structural integrity of the tree. Thus, thinning the crown does not align with the primary goals of structural pruning.