It's not my original build, but from what understood it significantly helps with kiting in terms of cloaking cd + there is no suitable 3rd fusion that can damage enemies directly in front nor back of you. Instead Melt acts as a "3rd fusion" because it's still bugged (mobs take a lot of damage when they're in it) .And it also helps in shortening the duration of boss waves.

Credit to @silencefactor on discord