Have at least a subset of style attributes conditional on the preceding style. For example, it would be great to be able to have different Space Before/Space After or Indent/First Line settings for a Heading3 paragraph when it is Heading2 > Heading3 than for Body > Heading3. Or for a paragraph following an inline image. Or change the type size and leading for a pullquote following Heading1 vs deeper in a story. Could be full paragraph styles or just a subset of attributes (I don't know when changing keep options conditionally would be helpful, but why not?)