draper

Introduces an extra layer of decorator classes that developers must manage, increasing complexity and learning curve, especially for teams new to the pattern.

Decorator instantiation for each model object can lead to higher memory usage and slower performance, particularly with large collections or high-throughput applications.

Tightly coupled with Rails conventions and ActiveRecord, making it less suitable for non-Rails projects or those using alternative ORMs without additional configuration, as noted with Mongoid support.

As applications scale, managing numerous decorator classes can become cumbersome, risking code duplication or bloated decorators if not carefully disciplined.