Small update:
I just made it compatible with SU2017 - but, I did not changed others in a code and I don’t think I will update it anytime soon. 
I’ll be honest - because I think it’s right, even if it casts a bad light on me - I somehow lost my intention/interest and can’t bring myself to think about this extension any further… sorry!
… but- at least - you will have e a dirty plugin to be able to install as “normal” rbz.
You will get a menu item in Extension menu “Dezmo Cut Road Quads”, therefore you can assign a shortcut.
Should work same as before. That’s it for now. 
Dezmo_Cut_Road_Quads.rbz (1.3 KB)