This new app for Final Cut Pro X comes with a story. A joint venture between myself and Philip Hodgetts & Greg Clarke at Intelligent Assistance, Creator’s Best Friend all started from wondering why a YouTube status bar was in sections.
Thumbs not necessary. You get the thumb by hovering over the section and thumbs won't appear in the clickable index anyway. You can select the thumb in Compressor or FCP but it has no value for them on YT.
BTW, the warning it gives stating there must be 10 secs between markers isn't all together accurate. It will delete the offenders from being copied to the clipboard but you can add them post paste when in YT itself.