I use the VSE produce sermon footage involving usually about 50 slides, which use mostly the same properties. Is there a way to specify default values for Blend Mode, Image Offset, and Length so I don't have to manually change them 50 times? I've found This answer as a work around, but then I have to add all the slides at the beginning, and I don't always know where they go until I get to them.
Don't know why this old question went up on Twitter, but if anyone comes by, there is an add-on by Snuq(not me) to handle all the needs when creating a slideshow. Get it here: https://github.com/snuq/SnuSlideshowGenerator/blob/master/Readme.md