Change which mailboxes are shown in 'All Inboxes' depending on focus?

I am assuming this is not a thing - yet?

But I would really REALLY like it if Apple made some changes to Focus. For any of us that have more than one email account, the chances are, that we're looking at work, some other work related stuff, some home stuff, and maybe some charity or voluntary stuff too.

So why then, can we not 'turn off' work emails outwith working hours? Or perhaps one account is a group email, that is only needed when 'on call' so this could only be visible (in the all inboxes section) when an 'on call' focus is set.

Again, if this is actually possible already, I've missed it somewhere, so apologies and I'd appreciate a how to! But if not, it just seems so obvious. Focus is meant to take away distractions, so why not do it in mail too!

Anyway, my question actually is, is there a workaround for the above, or do other mail clients do this?