Ability to upload .DST files
.DST may not be appropriate to use in the online designer but it is what would be used in the final production. Can support be added to allow uploading and converting these files to .SVG for use in the designer and also save the original along with the sources?
An example of such DST file would be nice to have to explore feasibility for conversion. Normally we are using Inkscape for vector conversions and DST is a rare format.