There are two upload options in F360
I grant that the difference is (fairly) obvious but I've more than once hit «upload data» without thinking then had to go back and import CAD data. It seems that it'd be trivially easy to merge these and autodetect MIME type or file extension and automagically «do the right thing» with the files (worst case you run the importer on a CAD model that someone just wanted to upload to their 360 environment and you still let them download the original file).
Obviously not a huge thing but if you can clean up the UI and save people a few cycles thinking about which option they want, why not ?
I've spoken with some people on the F360 team about this but it seems annoying enough that I thought I'd throw it out here to see if it bothers other people or if it's just me being easily irritated.