There'll always be a part of me that wants to learn vim better and set something like this up.
Then there's the other part of me, that just uses Sublime instead.
But there are benefits of Vim that ST are ever likely to have fully:
* Open Source
* Editing inside ssh
* The programmable way of editing which you'll never teach yourself if you don't dive in. I can't even quantify if this is better, but it feels better and you only need a few percent improvement over your editing/refactoring speed to be worth it over the years
* fully custom, you set it up exactly the way you want it. I never felt tempted to create shortcuts in ST, but it's much more standard in Vim
* it's good to understand Vim's way of editing even if you go back to other editors
* in theory you can pretty much do everything that ST can do in Vim but I don't think you'll get the full power of Vim if you try to recreate it in ST