Tons of features.

- Multiple profiles

- Logging of terminal output to files

- Regexp search

- Search marks matches in the scrollbar

- Quick jump between prompts — it knows where prompts are in the output, so you can quickly scroll to each position

- Window splitting

- Filtering — like find, but filters the window to only show matches

- Triggers: Do an action such as bouncing the app icon or playing a sound when a text string occurs)

- Status bar: Show the Git branch, current directory, etc. — better than custom prompts

- Preserves windows/tabs on restart/reboot, even current directory and window contents

- Cmd-Click to open files and URLs

I bet Terminal.app has gained some of these features over the years , but it certainly doesn't have have all of them.

Yes! Also:

- Minimal theme mode for a more simplified window appearance.