I did a mod so that you can now upload 10 images at a time. I hope it makes it slightly faster.
My ultimate aim is for you to be able to upload ALL your images in one go. So far, I have not been able to find such a mod. Checked with a programmer and he estimated it would take 50 hours of work at $100 per hour and no guarantees it would work properly.
Hopefully, I can come up with a solution in the near future that doesn't cost the earth.