Communication between private app locations

Please give a quick overview of your product feature request or feedback and note who in your org is affected by this issue [ex. agents, admins, customers, etc.]. (2-3 sentences)

I would like different locations from a private app to be able to communicate with each other, so that they can share data and avoid unnecessary external API calls. 

What problem do you see this solving? (1-2 sentences) 

In our specific use case this would be used to preload heavy data needed for a custom app in background so that when the admin user access the app all the data is there and we don't have a minute or two of lag until all the data gets there, significantly improving the user experience. But this could be used for all sorts of apps, sending ticket data to a user_sidebar, or other way round and so forth. 

When was the last time you were affected by this lack of functionality, or specific tool? What happened? How often does this problem occur and how does this impact your business? (3-4 sentences)

Every single day since this private app is essential in our Zendesk administration.

Are you currently using a workaround to solve this problem? (If yes, please explain) (1-2 sentences)

No workaround so far, but open to ideas :)

What would be your ideal solution to this problem? How would it work or function? (1-2 sentences)

Treat all locations from a private app within a single context so that we can share data between them. 

Reference: https://support.zendesk.com/hc/requests/13060924