I agree, it is AWFUL.
I'm tired of Yahoo recommending I upgrade Firefox.
No, d*mnit, I DON'T want to personalize my Inbox with a "theme"!
I've never liked Gmail-stylin' when it came to the whole "conversation" concept.
They also changed their homepage I don't know how long ago...couple months? I've been trying to ignore it, because THAT bugs me, too.
Starting to think of bailing on them, and I've had Yahoo emails for a really, really long time.