Cool! Very different from traditional ERD tools.

Still missing a lot of features and not as snappy/clean when moving tables around I can see lot of lag.

Have you tried erdlab.org? It's free and has some key features missing in your tool. For example, import/export SQL and advanced visual features. Quick one min video of ERDLab https://www.youtube.com/watch?v=9VaBRPAtX08&t=3s or you can login as guest at erdlab.org and try it yourself.