The new responsive design with a left nav-bar has been rolled out on various sites, and users have complained about it being ugly and counterproductive.
The first example I would like to present is the 200+ net negative score of the official announcement, Live: Left nav, new theming and responsiveness, as well as some answers under that question.
And some other posts and comments
- Left nav bar thingy has too much whitespace
- What does our long term community need? What does our long term community need to feel valued?
While I understand that this complete re-design is a big project and it's subject to bugs and features in its early times, it doesn't deny the fact that many people don't like it, even after those bugs fixed.
The feature request part of this question:
Give users an option to stay with the old design. I don't care if the new design is the default for new users, but I DO care if I have to adapt this ugly new one. I also won't care if all future bugs and feature-requests to the old design are denied. It looks very well as-is (i.e. in its current state). I just like it, plainly, simply.