Whenever I need to write Hebrew/Arabic in Blender I write it in a vector program first and import it. Implementing this would make life a LOT easier for me.
Hmm, I don't think we talk about the same thing, namely writing UTF-8 text work as it should (you even have Character table: F9 > Font & Char menus), but GUI doesn't show right UTF-8 fonts, that should be fixed.