Verdict
Improve Animations is a useful separation-of-concerns skill: a capable model spends its effort surveying motion and making taste-heavy prioritization decisions, then leaves behind implementation-ready plans another agent can execute. That makes a codebase-wide polish pass more controlled than ad hoc tweaking.
Best for
Existing products with inconsistent or dated motion that need a prioritized roadmap spanning several components rather than a single review or immediate implementation.
Keep in mind
It is read-only and therefore does not deliver the fixes itself. Its plans can also become stale if the interface changes, and source inspection without real interaction may miss perceived timing or input-specific problems.
Example task
Audit motion across the dashboard and produce three prioritized, self-contained plans that another agent can implement and verify independently.