There is an update on the KS which addresses, my questions
Element based - standard size is 2” square, but works with 40mm square - this is good most of my 10mm armies are now on 10mm square bases, with the reminder on WM 40x20mm bases which easily make 40mm squares. Units are chunky though, 4-6 bases - which probably works with my figures.
There are also pictures of the book layout - which looks good, a modern feel to the layout and clear if simple diagrams. Not entirely sure 4 dot numbering is needed, but it at least means you can directly reference rules paragraphs.
Re-reading the ‘review’ above the initiative system seems interesting with the mix of dice and cards. And the use of d20 is interesting too - is this a single roll per unit per combat or a number of rolls?
Sounds like there will be more updates on the KS to explain the rules further - at this stage sounds worth £9 for the PDF!