FrameMaker has a fabulous option for anchored frames that allows it to truly "float" in the sense that if the text flow causes the anchor to be too close to the bottom of the page, the floating frame will appear on the following page.
With InDesign the frame will stay on the same page, appear at least partially above the anchor, in which case the text-wrap doesn't get applied so an image inside the frame would for example cover part of the text.
So I would request to implement FrameMaker's version of floating frames!