Show task count by category
Add a new column to category view that show task count and show total task count.
Like with List.to http://lis.to/screenshots/1
AdminAaron Wolf (Admin, Task Coach) commented
This is somewhat possible already by filtering and then going back to task view. The status bar then shows how many are visible, so you can see how many tasks are in each category, you just don't see it on the fly for all categories at the same time.
Otherwise, this exact feature already exists on iOS, so it's reasonable enough to consider adding it to the desktop as an option.