I've been playing with 8296 screen parameters. Knowing the 8296 has additional screen ram I thought I would see how much I could push the screen. I managed to get a 90x36 character screen perfectly stable. I know 90 characters per line is not that useful so I also generated an 80x35 screen. This gives a little border in case some 8296 machines' screens are adjusted differently.
Once I confirmed the screen was usable I decided to add support for it in my Editor ROM project. If anyone wants to try it feel free. Remember, it only works on the 8296 machine.