Yep, that should work as well, forgot about that one. And as the new MaxGuiEx supports also fore- and background colors for TextFields (old MaxGui only TextArea) you could fit it again better in the game environment.
Another possibility is maybe to create a hidden TextField to do the 'hard' work (cut,copy,paste,insert) and show the content just with drawtext on the canvas.
Another possibility is maybe to create a hidden TextField to do the 'hard' work (cut,copy,paste,insert) and show the content just with drawtext on the canvas.