It would be quite powerful if we had the ability to convert text within the Zazzle design tool to native graphical elements/shapes like we have now (square/rectangle, circle, triangle, line).
Once text is converted to a graphical shape or element, this opens up even more design possibilities with advanced effects like masking with graphics and other shapes.
This would also reduce the need to upload graphics files (at least for designs that are primarily text-based).
If you mean converting text to Bézier curves, that would be way too difficult technically and would also exclude editing text by customers, so might as well just upload the graphic files yourself. I crave being able to mask text with graphics (or just have more text effects like shadows, outer glow, overlaying gradients etc etc) too, but only if that doesn’t exclude personalization.