The current math rendering options are confusing and fragment the caches. Instead, we should implement a single math rendering mode that
- 'just works' across different devices, screen sizes, resolutions & browsers,
- is accessible for screen readers and other a11y tech, and
- uses modest bandwidth and client-side resources.
The MathML / SVG rendering mode implemented by Mathoid with PNG fall-back images should eventually be able to fulfill these requirements, but more work is needed until we can make it the only math rendering mode: