Looks cool, although I’m a little curious about the LED controllers that are coming soon. Will they have any clear advantages over WLED?

Exactly this. Competing with WLED and the QuinLED boards is a tall order. For anyone looking for an easy button with most features you'd want - these two are it.

[0] https://github.com/Aircoookie/WLED [1] https://quinled.info/