Now that Google has determined that websites will be penalized in search results if they are not mobile friendly, every smart business is rushing re-do their website to meet these requirement.
In the process, many aspects of website design have changed.
Once such often suggested change is to eliminate rotating banner images in favor of just one banner image/photo. The current trend to a single image is fueled by the need for mobile sites to load as quickly as possible. But, you can have the best of both worlds. With a little coding a site can be programmed to have multiple Rotating Images on the desktop view and be limited to a single static image on the mobile view.