Wanted to provide an update: there are no specifics we can share about this request, but I will share with our team who is thinking through the next set of photo investments so this can influence their planning process. Thank you.John Parry commented
I went to Google Photos and created a dozen albums containing over a thousand photos, because you can display a caption on or under the photos. All was fine.
BUT on Google Photos only auto-arranges photos in an album based on photo date not filename, and from time to time randomly changes the sort order, ruining the album and destroying any attempt to tell a story with images and text. The lesson? Big IT companies are idiot savants, part genius, part fool. They pretend they've created a fantastic solution but meanwhile have bugs so moronic you'll wish you had stuck to analogue ways of doing things (paper photo albums). A plague on all their houses (that goes for Apple too).