Doug, yes it's a good idea and far more user friendly to be be able to upload files through a web interface but when it comes to large files, it's not appropriate transferring files like that for reasons that I wont go into. Which is why we have the FTP server access.
My suggestion (and I recommend instead of using us to store files like that), is to use google's
picasa web albums. They provide 1GB of space for images and you're able to easily provide a link to the images you upload. It's a much simpler alternative to FTP'ing files.