I'm aware development on this project is dead now but for posterity's sake: something that would be useful is the sorting of CSS selectors and selector lists alphabetically.
In other words:
.container {
width: 1200px;
}
.button:hover,
.button:focus {
opacity: 0.8;
}
becomes
.button:focus,
.button:hover
{
opacity: 0.8;
}
.container
{
width: 1200px;
}