I'd been meaning to respond to this when you asked, but I forgot all about it!
So, a few quick, hopefully not too spoilery thoughts:
I regularly paused my reading to read the Rhythm of War preview chapters when they came out. I did not find it confusing.
I do, however, view a few characters...
The Way of Kings Prime is available as a free download on Sanderson's website:
https://www.brandonsanderson.com/the-way-of-kings-prime/
In Brandon's own words:
I'm 10% in and I can tell you this book is a freak. Like, almost all the pieces for the real Way of Kings (and some small parts of...