After a brief read, it seems like a nice book, but it also seems incomplete. For example, it has a bunch of unique Monk traditions, but only Way of the Ardent Fist actually has any unique abilities. The layout could also be improved. Paladin, for example, has a unique Oath for the Blood of Vol, but it comes two pages after the short Blood of Vol description.
In short, it'd be really nice if more special options were added for unique Eberron things, and if the layout was updated to be a bit more streamlined.