Problem: Current uploading takes four steps to upload. Only two (title and license) are essential.
Proposed solution: Convert uploading steps in to a single page: Title, description and license should be listed in one page. Categories and structured data should be requested only after the uploading starts.
Who would benefit: New mobile uploaders
More comments: Currently the uploading is slow and time consuming. At least the structured data input should be moved to last step. Categories can also be confusing for new mobile uploaders as the mobile interface does not even show categories.