Autopairing

Automatic insertion of {} when typing # in strings in Ruby (not in CoffeeScript). This would be fine if those soaked up the next { that is typed, as happens with quotes.
- Ideal behavior here is treating {} like quotes—only insert the pair when the first is typed.
Occasional misinterpretation of typed quotes—they get soaked up into existing quotes instead of being inserted as new quotes.

Spacing

~~Extra spacing is not stripped from blank lines.~~
- Fixed by setting trim_trailing_white_space_on_save to true.

No keyboard shortcut for smart reindentation of a section.
- ...but = is implemented in Vintage, which is good enough for me.

R is unimplemented.
Tab navigation (gt, gT, 3gt, etc.) is unimplemented.
- ...but I've gotten used to Cmd-{ and Cmd-} for single-tab navigation.
:q (at the very least, for closing a tab) is unimplemented.
- ...but I've gotten used to Cmd-W.

Apparently no ack plugin.
No way to create and edit a file (currently, I do touch $FILE in a terminal before editing in Sublime).
- I believe the proper Sublime way of doing this is to just open a new file and then give it a name when you save it. This doesn't fit nicely in my workflow, and there are two issues I have with it: you don't get filetype detection until you've named the file, and it uses the stock system save dialog.
~~No menu option or quick toggle for changing when spaces are shown.~~
- See https://gist.github.com/3118845.

~~Made of Code is nice, but the current line highlight is too jarring.~~
- lineHighlight was set to fully-transparent black. I set it to #45c1ea33, which looks to be a bit nicer.
Bad Wolf is quite nice, but there's no Sublime port.