Looks like a very well-made labour of love, but is very clearly unfinished. Not a FR or even D&D fan, so can't comment on that side of things.

A couple bug reports/complaints/suggestions, just from skimming the factions. Haven't played yet, but these seemed egregious/important enough to mention

- National Overview Bugs: A bunch of nations don't have sites or have generic sites, and at least the Mushroom nation is missing most of its unit descriptions. A bunch of nations also have either their lore or mechanic description cut off, like again the Mushroom nation. Also, a few units have a placeholder 'terrain restriction', such as the aboleth cloakers.

- National Overview Improvements: I would also recommend using the 'Future Sites' mechanic to show national summons and heros in the National Overview screen, similar to the 'Better Nation Overviews' mod. Also, I would prefer a more standard national overview, with your notes on the nation placed somewhere else, simply for readability.

- A few units, especially pretenders, seem to have weird/obtuse mechanics that would benefit from a standardised and more plain description of their mechanics at the bottom, similar to the Spark of Divinity mod from Dom 5. Again, helps with readability for newbs.

I'm willing to help provide an outsider's perspective if so desired.