Have a look at Joe’s Impact stack, I don’t have it but it can do random selections and is TCMS compatible (Eclipse isn’t yet TCMS compatible and doesn’t have a randomisation option).
I cannot think of a way to do this with Eclipse. I do want to redo Eclipse in 2019. I will log this as a request for that version. Although it will probably come in the way of Total CMS integration like Impact has.
Thanks guys! I have Impact, and it works just like I want! Have a great holiday… Oh, 1 more, is it more efficient to have “local” or warehoused images?