When is it better to improve an OpenCart store instead of rebuilding it?
Improving an OpenCart store is usually better than rebuilding when the core store works, the data is clean, and the main issues are speed, checkout, theme, SEO, extensions, or everyday management.
A rebuild makes more sense when the current base is unmaintainable, full of old edits, or unable to support the commercial workflows you need. Start with a technical audit before deciding.