So, if I could change one core thing with the book (aside from making the necessary errata changes) it would be to consolidate the tables.
I find it much more useful to have things collected in a single table that can easily be referenced instead of distributed through various chapters. Two cases in point:
To determine the prices of weapons, you have to look under the appropriate chapter. In order to find the damage types and qualities, you have to look under combat. Why not save the space in the book and have 1, tight table that can be referenced appropriately where necessary?
Another case is the units. You can see what the unit costs and discipline modifiers are under the House creation rules. But to find out their stats (armor, damage, etc.) you have to go to Warfare. Again - 1 table covering all of these aspects would be preferred.
I would love it if they (GR) could provide some of these tables consolidated to make creation and looking things up quicker and bundle that with the Narrator tools they're developing.