We dev dont need that. For normal lets make separate version of whole WordPress control. Like for developer they need full control, while normal blogger will be happy to just post and set themes, showing all option will surely decrease our accessibility.
Reading this will get you more details
I asked to built it in core, instead of plugin, so those noob user dont have to install anything. Just a simple option during install
Select your Accessibility ->
1) Expert / Geeks or Want to be Geeks
2) Noob Blogger/ Dont bother much about setting just give me a blog
We will see a lot more user not scaring about WordPreess software from WordPress.com instead of other platform like Tumblr.