I say visual is*definitely* involved, but more than just good visualization of something static. I think the medium itself (code, structure, etc.) needs to evolve into something better and more dynamic. ... But yes, it will need good visual representation beyond text

If chinese like ideograms would be involved would that counts for the textual or visual category ?

text-like structure editor with visual representations of expressions of those types for which a visual representation makes sense!

I see visual / textual as different projections of the same model, just as "math" isn't entirely visual or textual. Geometry & algebra are two ways to study the same underlying models. It seems we need visual representations for intuition, but textual representations can be very helpful in making them more precise.