About time Maya gets Blender-ish UV tools. And FYI, Roadkill's technology is straight from Blender, and they even state it in the program credits. Instead of laughing Maya being late from the party when Blender has had these kind of UV features for years... I'm genuinely interested how Maya approaches UV unwrapping now.
I got maya 2017 to do the same more or less. I made a cut uv seam button and a unfold and layout button. it doesn't work as pretty as in 2018. I have to use Maya 2017 at school. blender and Modo have had this for years though...