When making any sort of gallery with Excel, I find it would be amazingly helpful if there was a checkbox in the properties that says “If item fails to load, remove from gallery”
When content is dynamic, there’s lots of reasons that an item fails to load. This would make everything appear and run much more smoothly.
For example - If I have an excel list of 5 picture links, fed into a carousel, and one of the picture links is broken…instead of showing a blank item placeholder with the (!) symbol…the gallery will not show the item. Visibly, the gallery would only show 4 items at the time of running.