Deleting a video from VimeoPro requires clicking through three separate pages and entering a password - for EACH video you want to delete. There is no way to delete multiple videos at once, even for paid VimeoPro users like us. As seen in this thread, it's been asked for and promised for a very long time, with no results.
For people who manage a lot of videos, this can add hours or even days of work unneccessarily. We can move to another service, but my hope is if Vimeo sees that enough people want this feature, they will finally take action. Please sign this petition if you feel this is an important basic feature that Vimeo should develop.