What features should the ultimete-upload-tool have?
Ability to enter a license in this format: {{pd-user|soandso}} instead of just a drop-down menu. Those have limited options and don't take into consideration the more obscure templates or those with multiple fields for input.
Another nice feature for the ultimate upload tool would be a red/green light that displays when you enter a category name so you don't have to go searching on-wiki for categories, or even a feature that displays subcats of your chosen category so you can further refine the cats to place the image where it belongs.
Batch edit options are great, choices to use the {{information}} template automatically or allow you to format the page yourself in one box is helpful, automatic numbering if you give files the same name is a standard feature, checking on-wiki to see if an image of that name exists should be another red light/green light thing when you enter the title, etc. etc. etc.