Problem: Text may be too small, not the right color, wrong font, or displeasing.
Proposed solution: Allow for users to set default font sizes, text colors (including normal, link, visited, and redlink colors). Text width may also be more granular instead of all or regular.
Who would benefit: Everyone because this brings greater accessibility.
More comments: I'd like for the settings to be available on each page, but also provide an opt out so the menu only is in the settings area.