I'd love to have a new visual style added that is similar to consistent colour but overrides everything to be greyscale.
This would reduce the need to override elements individually per view and allow flexibility when that can't be accomplished while retaining a coloured elevation sheet. It would allow for greater control for printing since in our area on-site, builders want to use a black and white copy of the elevations but printing the coloured elevations by changing the printer settings looses a lot of the control over the final product and the hidden line style doesn't allow for quickly understanding the elevations.