It would be great as an evaluation guide to see a TextMate to Sublime Text X feature mapping. Not just for marketing/comparison reasons but also because it would answer the questions about "tm does this, does SLT?"
A couple of examples are:
TM makes it trivial to run a shell command on a file or text selection. SLT probably does the same, but it wasn't obvious how.
Running tests from inside TM has evolved into a huge productivity boost. Not without some warts, but again, not clear how to accomplish within SLT.
Mailing list. Is there one?
Just my initial thoughts.