Something like Zendesk would be awesome.
Both Zendesk and Intercom have been added!
I'd like any chat app to interact with my customers...like you do with yours!
Also in addition you can add links to your customer support docs inside the settings so customers can easily get to them
FYI on this one, you can easily drop the JS code in your theme already. We'd need a specific request for a specific customer service app. This request is too generic.