In the activity tab, be able to see spending by category.

Even if not graphically, basic text would be great to be able to do in the Activity tab.

One use case is deciding on new credit card. Say my best dining rewards cars is a free card that gives 3% for dining and there is a card for 4% at $250. If I could look at my historical dining I could see

If that alone makes getting the new card worth it. If I spend more then $25k with no other benefits to speak of, I win by getting the new card. If that card comes with a dining credit of $120 a year that number is now $13k etc...