Seconding the DIY approach. Ctrl+W already has a common idiomatic assignment on Windows, "close tab or current document".
ST2 uses Ctrl+D to perform "expand selection to word", and also has the very nice additional effect of selecting additional matching words in the document when you press Ctrl+D repeatedly.
ST2 uses Ctrl+D to perform "expand selection to word", and also has the very nice additional effect of selecting additional matching words in the document when you press Ctrl+D repeatedly.