Built in font-resizer for W3C web accessibility compliance
I've tried to use all the available Font Resizer plugins as the client I'm creating a site for wants W3C web accessibility compliance for people with disabilities, in particular visual impairment (they are an opticians so this is important to them).
None of the 6 plugins I tried work with Canvas, so this would be an ideal opportunity to make Canvas/the framework more internationally compliant.
Though if you're looking for a plugin, check out WP-Accessibility. You might have to get involved in the CSS to make the font resizer work properly for the navigation and footer widget area (I did, anyway)
This and a few other tweaks for accessibility in Canvas would be much appreciated by folks who use screen readers or have other visual disabilities.
(more details on accessibility at http://www.w3.org/standards/webdesign/accessibility )