In the user-defined .tmTheme files, fontStyle seems to only accept bold and italic at the moment. Adding support for underline would be greatly appreciated.

Haml highlighting works great but as soon as you put a :javascript block in haml it doesn't highlight the javascript at all.  

Currently the only way to duplicate a block of code is to go through a tedious process of select->copy->go down->unindent if needed->paste.

ST1 had a plugin (poweredit) that made Ctrl+Sift+D duplicate currently selected text if it's available. If not, it would duplicate current line. This is super useful and productive feature and I think must come by default with ST2.

Thanks.

Currently folders are sorted separately above files in the sidebar. Is there any way to have them interspersed? If not, then I suppose this is a feature request...

maybe a global preference to disable animations on side bar?

An option to paste formatted text from clipboard. For example, the Visual Studio productivity power tools copies code in both plain text and HTML format (syntax colored) to the clipboard
In SublimeText (and I think almost in every text editor), you can only paste the plain text version. However, I would love to be able to paste the HTML formatted text (text including the HTML tags).
So essentially as MS-Word like "Paste special" functionality.

Option to display a subtle border around the minimap to help distinguish between the content and the minimap (same as in Sublime Text 1)

The holy grail of C/C++ text editors is to integrate with Clang/libclang and parse the code the way the compiler does--by actually compiling the code.  This would enable extremely expressive syntax highlighting, continuous build error reporting, and full refactoring, without having to maintain one's own parser.

When plugin uses add_regions API, sometimes tabs row or icons on the gutter (or both) disappear.

This bug was detected among the majority of Sublime versions and on all platforms.

Unfortunately it appears randomly. I can't tell how to reproduce it except using plugins that draw icons on the gutter (like Modific).

Add a means of editing/viewing binary and text files in hexadecimal.

Off hand, that looks to be the only feature missing from everything I regularly use in UltraEdit.