Perhaps you might enlighten me as to which suggestions you are referring to.  In general, i would say my stance on needed research in the field of gifted education has not changed.  We are in continued need of intervention research that allows us to understand what works with these students in the classroom and in the school and beyond.  Twenty years of work doing this kind of research suggests to me that it is still needed to gain the nuances of understanding how best to understand and implement higher level work with these learners.  We know what to do in general terms but often lack the research base for effective implementation.