I note that it's not possible to interrogate this via traditional methods? Any tips on how to more easily do this? I would have thought given the input definition is succinct that Parents Child would work.

 One must 'open' the sequence, then click on each input to see what highlights in the tree, 

In a large model this would be cumbersome and somewhat annoying.

Even expanding the DS and clicking an input doesn't highlight it or allow you centre or re-frame on the geometric object.