Correct me if I’m wrong but I’m fairly certain that is purely for creating Skydomes and clouds. It doesn’t do any weather systems, shader stuff or have an ‘AI’ as such which can make the system dynamic (think minecraft).
As for Flexibility/Quality, is purely Blueprint so effectively infinitely flexible, and I like to think my work is pretty top-notch 
Yes to the video demo, I’ll go over everything and if time permits, do an in-editor tutorial for it. An example level will come with. Thanks for the comments!
EDIT: Turns out does indeed do some weather stuff, interesting! Once I get around to doing a more complete video of the features, you guys can decide for yourselves which suits better 