Note: I'm a web developer, so it's likely that the software behaviors that bother me are unlikely to affect non-web-developers.
- Clicking the address bar makes the web address slide to the left to appear like normal editable text field. If I'm clicking in a specific spot to edit the web address, I have to move my mouse again to highlight the portion I wanted, since the whole contents of the field slid leftward upon click. If the address bar wasn't weirdly centered to begin with, the sliding wouldn't be necessary.
- The address bar is centered and doesn't fill up the width of the hybrid title bar/toolbar. Even removing the Flexible Space toolbar items that are present on either side doesn't make the bar expand to fill the available space. This is inconsistent with the behavior of Flexible Space toolbar items found elsewhere in OS X.
- I'd like to be able to disable the Favorites icon menu that appears when the address bar is clicked. Combined with the address sliding, there's an awful lot of animation going on for a simple click in a text field. I get that this is similar to how iOS works, but choosing among a Favorite is more convenient on iOS because typing takes more effort on the smaller screen. As well, on OS X, Safari's Favorites Bar defaults to showing the very same items as the Favorites icon menu.
- The Favorites Bar shows no favicons. A lot of sites are easily distinguishable by their brand color, but Safari only shows text buttons, making spotting the desired Favorite slower to locate than if it had an icon.
- Back and Forward are standard toolbar-sized buttons, but Reload is a smaller click target inside the address bar. Again, it appears more like iOS, but I wish it were bigger. Live reload web development is available, but I still reload web pages a LOT. Command-R gets used frequently, too, but sometimes my mouse is already in motion and clicking reload (on a bigger button) might be more convenient.