So this is idea..
I know you can edit text via smart objects, but here is the problem you shuld solve
For exaple, when i use artboards for differents size banners and put same text (smart objects) on all of them we have one but Big problem. If you scale down smart object, and that smart object is a text, pixsels do not aligne corectly for small sizes. I whuld love if you chuld add some sort of Special Text-smart object with options for text pixel alignment in photoshop when we scale down that smart object.
* There is screenshot in attachment for better understand..