I could separate some of the elements so that they scale in groups (for example chat, panels, action bars, buff icons), however many elements need to scale to accommodate the increased font sizes. I'll think about what can be done but it'll be a big task (again) to rework the interface to scale parts individually. I haven't seen played any games that do this, aside from games that have separate chat box scaling. If there is a good example I could follow, let me know.
Thanks