Clearly differentiate in the UX between trivially reversible, reversible-with-somebody-elses-help, and irreversible actions.

[lampholder]

I'd like to see a consistent design language for operations which are:

• reversible - you can reverse your action all by yourself (e.g. leaving a publicly-joinable room)
• potentially reversible - you can reverse your action by asking to be reinvited (e.g. leaving an invite-only room)
• irreversible - nobody can ever undo this (e.g. deleting your account)

Inspired by #5724

[lampholder]

As per #5800, perhaps the distinction is not 'trivially reversible, reversible-with-faff and irreversible'; maybe a better distinction would be drawn along the lines of 'how hard we think you should think' about an action before doing it.

[lampholder]

#7536

[lampholder]

I expect we will consider this as part of the redesign effort.