Jetpack connection: How to handle disconnecting from Jetpack?

[DanReyLop]

Adding this for visibility and discussion in the open. The Jetpack Connection Task Force kickoff meeting has prompted some discussion about this: p1572023063121300-slack-wcpay

In a future where WCPay is connected to wp.com using the Jetpack connection package, how do we handle the merchant disconnecting said connection?

• If WCPay is uninstalled or deactivated, that shouldn't affect the Jetpack connection or other Jetpack-connection-powered plugins, I think we can all agree on that.
• If both WCPay and Jetpack are installed, and the merchant explicitly disconnects Jetpack, should the WCPay connection also be severed?
  • If yes, we should add a filter to this modal so we can present the merchant with more reasons why he shouldn't disconnect.
  • If no, then that means that disconnecting Jetpack won't affect the rest of the Jetpack-connection-based plugins. So, the site will only be truly disconnected from Jetpack when the last Jetpack-connection-powered plugin is uninstalled/deactivated?

[DanReyLop]

Moved the discussion to the Jetpack repo: Automattic/jetpack#13843

[dwainm]

Jetpack disconnect breaks the entire site, opened an issue here:
#249