Skratman is right.
No matter how the software is made, in the end it's a software package in order to allow people to run their blog website the way they want.
This should extend into the admin controls as well as the forefront.
This update without alternative present to switch back to the 2.6 layout or even install an admin theme, shows that the WordPress developers, how good their intentions may be, are expecting 100% of their userbase to like it or choke on their issues with it.
Here's a novel idea, which I will repeat as long as it's necessary:
- Use themes for the admin controls as well as the forefront.
- Add the 2.6 layout as a theme so people can customize.
- Add the admin controls to the admin theme editor. Either in the already existing theme editor or a seperate admin theme editor.