My personal yardsticks:

How often does a conceptually incremental change correspond to a proportionally incremental code diff, vs. a surprisingly whole-world-upside-down rearchitect?

Do the code patterns naturally leave enough room for you to incrementally shift/transpose how things are organized?

When the answers to these are unfavorable, I often find what effects to "coloring" in the framework, library, or language, sometimes all at once.