Don>Except that's DPs current markup. That's specifically what we need to

remedy, including introducing syntactic markup.

I certainly don’t understand this statement.  The variety of things one can find in the original book which are differentiated continue to need to be differentiated.  Otherwise you are dumbing down the formatting, and throwing away information which was in the original book. You might want to rename the DP tags, but not sure how that is supposed to make a contribution?