One thing that hasn't improved is that both the new Outlook and OneNote are slow to open. Compared almost any other app on my SSD, these take way to long to load for what they do.
I've been using the new Outlook for a week and I'm going to ditch it because it's sooo slow. Going back to using the windows version via Parallels in coherence mode which is much quicker.
I can't stand the way it groups all of my pop email accounts into one folder either. I know I can create a sub folder for each account and create a rule to move new emails to the correct one but why should I have to do this? Aren't mac users expected to have more than one email address?