Exactly what I thought when I first saw it. Had some spare time this afternoon, so I took a stab at it.
Went from this:
Filleted Corner Script_Rev3_DataTrees.gh (52.0 KB)
Most of the final definition is taken up by the inputs - I could have eliminated the Graph Mapper components, but I wanted to keep the same inputs as the original.
The panels on the ends of each section line up almost exactly with the original. The in-between panels deviate slightly from the original. Not sure exactly why, probably because I had to change some parts the basic definition around slightly to get it working with Data Trees. OP can tweak it some more if he wants, it’s good enough for me.