Unless I've just happened to miss this setting for the past few versions (which I hope I haven't, as I started writing a plugin to do it for me on save, but failed miserably when I didn't know the ST2 API and the docs are for ST1) we also have another new setting which I've been longing for: trim_trailing_white_space_on_save (default false, I've overridden to true)
In addition to that, I don't know how long this bug has been in (as I don't use overwrite mode) but (and this may be dependent on caret style, I'm on the default of smooth) in overwrite mode, at the end of a line, the overwrite caret is just one pixel wide (trying to be as wide as the character under it which is a newline character and thus hidden. And at the beginning of a tabbed-in line, it assumes a tabwidth of 8 characters (I have 2) so it goes a bit funny.
Obviously it doesn't matter to me, as I pretty much don't use overwrite ever. Just happened to notice it.