I'm a bit late to the party but I still wanted to share my thoughts on the matter.
The core is almost perfect. Most things we can add using the API so time should be concentrated on the things we have no control over. Things such as the sticky search highlighting and the tweaks to Find behaviour that have been mentioned elsewhere.
The renderer rewrite sounds like a big job but I must say that it would be nice to use Sublime when I'm accessing Windows via Remote Desktop. Perhaps something to do more for fun than mass benefit.
Regarding sales. I believe that Sublime will continue to gain momentum; it's just a matter of time for the word to spread. All who have seen it love the sublime editing experience. It truly is the best.