a satisfying read, with some reservations.
political views of the author are very prominent, and can disagree with yours dramatically (I, for instance, don't get terribly excited when every liberal is portrayed as a weakling, every enemy politician a bastard and every Navy official a hero). the protagonist is a super woman, of course, with tungsten balls. if you prefer more thought and less propaganda, try L.M. Bujold's Vorkosigan series or Iain M. Banks's Culture series instead.
another issue is with space battles in HH series being thinly disguised naval battles
broadsides, cannons, boarding hooks, avast, me hearties. don't try to find any WC-like similarities with airplane dogfights: nope, we've got battlecruisers and ships of the line here. oops, my bad: ships of the wall.
but really, HH is not the worst sci-fi you can find, and it's about space combat. characters even try to evolve when they survive from one book to another... doesn't make them any less 2D, but adds variety.