Can the _anchors in diacritic marks also have alternate positions

Currently you can only add alternate anchors for the base glyph, for example,

Here, in the example:

circumflexcomb is the base/parent glyph, and the alternate anchors are “top” and “top_viet” so that the diacritics that will connect with those anchors get 2 choices for placement.

Would it be possible to reverse it so that I could have “_top” and “_top_2” in the child glyph and then you could select a different anchor in the other direction. Or does that get too complicated when you then have to make two selections for the base and attached glyph…