hey Pilou, i cant install scripts as fast as you yet ;o)
But yes looks super cool and im glad you might see use for it as well...

Having seen your 'gif' video - even more apparent is I really like the logic of way Michael
has set this up e.g. Target alignment object 1st.

FYI: in other software would typically select the sources 1st...
More i I think about Michael's "target 1st" approach more i like it.

Small details can make big differences.