1) I think Ristow and Amsler are right: a specification of standard
   presentational markup for TEI tags would be a good thing.
 
2) However, preparing such a specification will be no small matter.
   I doubt if the TEI could do it without extending its schedule and
   receiving increased funding.
 
3) A formatting specification itself requires a standard declarative
   language.  The problems in developing such a language are
   considerable.  Fortunately there is one already under development
   in ISO/IEC JTC1/SC18 WG8.  It is DP10179: Document Style
   Semantics and Specification Language (DSSL).  Can anyone
   on this list comment authoritatively on DSSL?