Not too happy with the Yahoo mail beta they are currently pushing on us. I do not like how when you click on an email it does not scroll down in the panel below and instead jumps to the other email. The current Yahoo Mail lets you scroll inside the email inside the pane.
I also cannot stand the annoying orange banner on top. Please make it less a headache and less of a banner on top. We are here to see our email not be blinded by that banner.
Another change that went sour was the lighter fonts. I can barely read my emails now because the fonts in the panels are not as dark or bold as before. Why? I see nothing faster about this email...and certainly get no use out of the facebook add-on. what would be cool is if they could let you have the option to do conversations in emails like Gmail but not on all of the emails just some that you pick.