I'd say that the quality of reflection depends on the quality of the reflective surface, at least this is what I had in mind. To put the question in a different way, if "HA is not rejecting parts of any waza that you do not like, while keeping the rest", what is it?
PAG. I mentioned the SHU stage of SHU-HA-RI as a model of a learning process that, for example, enables one to practise koshi nage with feet apart or with feet together, depending on the teacher.
I think discussion of HA and RI is best left to a separate thread.