Google Chrome is the browser of my choice. It is fast, has developer tools and looks great. But it could be improved. I'll describe some features I miss.
Disable sound for tabs ¶
Sometimes I watch a movie while I play a flash game. Some flash games don't offer an option to mute them. So I would like to get the possibility to disable sound for one tab.
It could look like this.

Spell checker ¶
I write Blogs in German and in English. So I would like a spell-checker option at the bottom-left corner to switch languages:

HTML5 Form Elements ¶
HTML5 brought many cool new form elements to the web. If you like, take a look at my list of HTML5 input types. Chrome should support all of them! Note that Chrome does support these types according to html5test.com. But I can't see any difference between type=url and type=text. That's not supporting the new types!
By the way, at the moment Chrome scores 385 points + 13 bonus points. The best browser currently scores 425 points + 25 bonus points.

Internal PDF-Reader ¶

Rotate PDF ¶
Some PDF files I receive are rotated by 90°. It would be great if I could, as in every PDF viewer, rotate this. A common shortcut is Ctrl+Arrow key.
Page numbers ¶
It would be great, if I could enter the number of the page I want to view. For example in the URL by adding "#123" for page 123.
Security ¶
Extensions ¶
Auto-Disable extensions for https. Only PayPal, Amazon, Ebay, GMail and my bank accounts work with https. I don't need my addons for these sites and I would appreciate if I could auto-disable them for https.
Password Reuse Visualizer ¶
Firefox offers a tool which helps to identify passwords, that get reused often. It is called "Password Reuse Visualizer" and looks like this:

Material ¶
I've used famfamfam slik icons. For the menus I've used Sans, 14pt, no hinting but Antialiasing. If someone has better options, it would be great if you posted it as a comment.
If you just want to see if your problem has already been submitted, go to the issue-list.