Back in Mavericks the design was a mess (anyone remember game center?). Some apps looked new, while others looked old. Yosemite fixed that in a way.
Now with the Catalyst style apps I feel like we are back at the Mavericks problem. Apps look different throughout the system.
For example
App Store/Books: Large sidebar
Music/Podcast/Photos/Finder: Small sidebar
Mail: Little Mailbox row under the top bar to view Mailboxes column
Notes: Button for bringing up the source/folder column
Reminders: completely different
Stocks: wtf
Now with the Catalyst style apps I feel like we are back at the Mavericks problem. Apps look different throughout the system.
For example
App Store/Books: Large sidebar
Music/Podcast/Photos/Finder: Small sidebar
Mail: Little Mailbox row under the top bar to view Mailboxes column
Notes: Button for bringing up the source/folder column
Reminders: completely different
Stocks: wtf