Could you demonstrate with an example how Ascii math is easier to read and takes less time and effort to type? The example on the main page,
sum_(i=1)^n i^3=((n(n+1))/2)^2
looks to me no less complicated than
\sum_{i=1}^n i^3=((n(n+1))/2)^2
so if the goal is it quickly communicate mathematics in plain text (without rendering), I see no difference. If the advantage is that the outer parentheses are automatically resized, why not write a renderer that uses Latex and puts \left, \right everywhere? Better yet, why not go straight to TeXmacs?
I'd love to see an example of a mathematical expression where Ascii math is visibly simpler than Latex and is not just about parenthesis resizing.