Update on Focused Inbox and our plans for Clutter

As a user that has both clutter and focused inbox with the "Other" folder, I disagree that there will be no loss of functionality because they are using the same algorithm, at least to the extent that override of a message class/id as clutter by placing back into inbox but allowing it to go to "Other" enables the creation of a third class of "medium" priority.

Using the tools this way, I am getting all my "spare-time, almost junk" mail (i.e. subscribed newsletters, promo emails, etc.) in the clutter folder (and notably, as others have said, NOT synced to mobile devices without outlook app), my highest priority overridden "non-clutter clutter"  in the "Other" folder, and most focused mail in my inbox.

I am going to lose this with the loss of clutter - so once again, if it is really using the same algorithms, so have a shared codebase, how hard is it to just keep it as an option (sure, disable it by default if you want) instead of retiring it?