Hello,
Yes for starters the much needed scale to reuse symbols. Further more I would use a multivalue patch system to control dynamic SVG. They beauty is that this would allow to control things we just might not think of right now.
Actually I would revise my suggestion. Please forget patches in the way described above … they would create another quirky layer of app uniqueness.
** rather allow timeline values to be mapped to a function ** this way one could scale the 0-1 values via math to any range and set CSS or other unique things that need to be “rigged” for animation and control.
Best regards