What is the best structure for organizing integration classes via PI/PO proxy?

I person a task to cheque the enactment of PI classes successful an environment.

The classes generated for proxy interfaces are organized arsenic subclasses of the aforesaid class. So, erstwhile a caller interface is created, alternatively of a caller people being created for this interface, the aforesaid people destined for that namespace is used, and past lone 1 caller method is created, meaning that immoderate objects tin beryllium reused.

This is generating respective problems successful the environment, due to the fact that erstwhile 2 developers request to enactment astatine the aforesaid clip connected 2 antithetic interfaces, a dependency occurs and 1 of them cannot proceed.

The prime to bash the architecture this mode was made a agelong clip ago, and I ideate it volition instrumentality a batch of enactment to undo it. However, I would similar to know, successful your opinion, what is the champion mode to signifier these classes?

I usually marque a people for each interface, but I'm unfastened to ideas.