the title pretty much says it all... I create products that are cut using a laser cutter / vinyl cutter / router.. and each of these use vector files to cut from... having to create PNG images from the front end (custom all) and then having to recreate each order manually in Illustrator is a huge waste of time.... all of my files are currently in .ai or .eps format, so having to convert hundreds of files to PNG would not be fun... .ai or .eps would be the most reliable.... I would rather not have .svg file because in my experience, .svg files can be unreliable and physical dimensions may not be true to size... .pdf can contain vector, raster or a combination formats which can be useful... so being able to choose how you want to download your production ready file as an .ai, .eps or .pdf would be great.... also, have the ability for customers to UPLOAD a vector image using the same file formats for designs that would require a vector image... as far as font used in designs, they can be left as "LIVE" fonts in the production ready artwork in case any changes need to be made (spelling, spacing, etc).... before it goes into production....