If I try open long files, the editor stay very slow (700Mb in ASCII format). In case, a option for no load file in memory. Load file while editing will be a great idea and it make edition very fast.
I believe to be a great improvment access files and edit from server directly. I see others editors making this. Example: Crimson, jEdit e UltraEdit, but a like very much TextPad and I would be very happy if I would can do it.