After spending some time with Sublime, there's just a one command that I used to use with Emacs, but don't seem to find it in Sublime. In Emacs, Ctrl+L scrolls the current view so that the current row is in the center. Looking at sublimetext.com/docs/commands, there's a "scroll amount" command, but to know the amount I should also know the current row and the number of rows in the view, and there doesn't seem to be commands for those (or I just can't find them).
Would it be possible to implement this? Of course, the exact keyboard shortcut could be something else.