Hi,
I agree reordering images by dragging is fairly important for the user experience.
At the moment it seems the only way is to delete all the images and upload in the preferred order?
But a user also has to do this if they want a new image to be the first image, they need to save all the images first (if they’re not saved locally) and then re-upload them.
Uppy is good but adding some important UX features like this would make it rival the more established uploaders.