It would be nice if there was a way to display external data for contacts. For example, displaying order data based on the contact's email address from WooCommerce.
Instead of building individual integrations, you should offer option for Respond to pull data in a format you specify from a webhook or API endpoint.
It could be as simple as displaying an iframe with an email parameter replaced dynamically in the iframe source URL, so it would display data for the contact. The burden would be on us to create a page that accepts an email parameter and displays data we need. And Respond would simply show that iframe page in a sidebar or modal dialog, etc.
Whatever it is, being able to see external data for contacts is very important.