A change can be everything from a misspelling in a document (activity) to a complete new design of a product (Project). With current functionality, Windchill Change Management is too cumbersome to manage small changes and too weak to manage larger projects.
For small changes, it should be possible to configure a simple ECN with one embedded task. For large changes, it should be possible to use a project (ProjectLink) as implementation plan (or get same functionality as you have in ProjectLink). A projectLink license shall be needed.
This means that the ECN configuration has to be controlled at the type-level, instead of preferences.