I've been using Yahoo mail for decades (yes, really). In all this time I've steadfastly refused any of the "new" versions because they've all sucked, changing for the sake of change far more often than improving usability by any metric. This time you've completely removed the old, reliable interface and given me only the choice between your latest "new" version which completely sucks, or a slightly older "new" version which sucks slightly less and which I rejected in the past.

GIVE ME BACK OLD YAHOO, DAMMIT