CSS perfect completion should work mainly in 3 stages:

1.Selector: HTML element (tag) completion (not realized in Sublime Text 2);

2.property name completion (realized in Sublime Text 2);

3.property value completion (realized in Sublime Text 2).

Completion must start with HTML element (tag) completion (format with curly brackets {}) (not realized in Sublime Text 2). Completion should include Universal, Class, Id, Descendant, Child, Adjacent sibling, Attribut, Pseudo-class and Pseudo-element Selector (not realized in Sublime Text 2).

HTML element (tag) completion must be followed by property name completion (not all the properties, but only the specific property, for a specific HTML element).

Property name completion must be followed by property value completion (not all the values, but only the specific values for a specific property).

knowing what keys it have will greatly support developing context aware plugins

So, I have this neat idea when it comes to navigation a file solely by the keyboard.

Here's how it works (Consider a class, as in programming):

You are at line 8, adding a class property. Then, you quickly move your cursor down to line 25, type your method and realize you need to rename the property. Now, since you've "been" at line 25 for a few seconds, sublime "remembers" that position, now when you quickly move back up to line 8 and rename your property, you can hit hotkey X to return to the previous "remembered" line.

What do you think?

The "time" required to stay at a line for it to be "remembered" could be like 3-5 seconds or perhaps user configurable.

It would be awesome if plugins could dynamically modify the autocomplete list. That would allow for context specific autocomplete. Even something like an event asking plugins if they have any suggestions to add to the autocomplete list (before it pops up, or async while it's displayed) would be a nice start.

I have a 2000 line long file whose sidebar minimap exceeds the height of the sidebar window.  With the cursor located at the top of the file, the sidebar view actually represents around lines 1-250 in the file.  If I click at the mid-point of the sidebar view then ST2 should go to line 125 (1/2 way down the visible map), but in fact it goes to line 1000 (1/2 way down the actual file).  I'd expect it to go to the section of text that I clicked on in the minimap.

Have you tried different price points? (I'm sure you have, but i'm curious as to why).  $70 seems an awful lot for an (albeit amazing) text editor.  I'd buy this with a smile on my face for $30, but $70 is simply too much.