In Adobe Illustrator, when you select a single object, it will automatically change the alignment option to "Align to Artboard". Additionally, if you select more than one object, the alignment option automatically changes to "Align to Selection". I think this feature would be amazing in InDesign. It could work the same way where a single object or text is aligned to artboard and multiple are aligned to selection and maybe if you grouped multiple objects, it would go back to artboard until you select another group or object.