The idea of artificially introducing unusual poles might actually be helpful with loose parts such as eyes, lashes, teeth, finger- and toenails. Especially when there are several parts with the same topology and possible some extra symmetries, finding the correct correspondence could be tricky based on where the vertices are.

If one controls the exporter, one could add some dummy faces to make the whole mesh connected and remove them again on import and after matching. But that would probably destroy some of the advantage of having loose parts in the first place. For example, in Blender I can hover over a part and press "L" to select it, then hide everything else.

Mangling the topology somewhere in a corner of such a part might be less obtrusive, although it could  still lead to unexpected results when morphing.

-- I'm not mad at you, just Westphalian.