Block Mixin for Setting Direction and Display Properties?

It's a little confusing the way row and span-tables set the display and direction properties for the rest of the document instead of just the particular row or block. I understand the need for reset-display with the way the mixins work, but how about a block mixin for setting these properties that resets upon completion.

Something like...

@mixin display(table,LTR){
...
}