Intent: Provide a way to extend the capabilities of a software system by addition rather than modification. This can range from traditional plug-ins and add-ons to an architecture built almost entirely of plug-ins.
Modifiability (Requirements change). Availability. Testability. Focused features. Limited memory footprint. ...
See examples in PluginArchitecturesRelated Patterns:OpenClosedPrinciple, PluggableArchitectureCompetitors
It is unclear how this competes. Perhaps you can offer an example, TopMind, since you contributed it?