How to select hard-edge poles ?

[ggaliens]

Dimitri ... remind me to make you a video of new tubes from selection.

1) Pick hard-edge Junctions after BOOLEAN.
2) Interrupt JUNCTIONS with a vertex bevel. This requires a new selector to find the junction vertices, I think. (So I wrote one to release later).
3) Make tubes along all the boolean intersect lines in one pass.

I got this workflow going. It seems fun and like something you might enjoy.