@birdcannon , I think what you've discovered is that Graham McNeil just fucking sucks at writing. He has great ideas but his execution is crap.

I've read the main plotline (and main subplotlines) of the HH and the SoT and his books are by far the worst. Some people love his stuff, for example that godawful book Fulgrim , but I can't for the life of me understand why.

False Gods? The first signs of how boring his future books will be.
Fulgrim? Cool and superimportant plot point of the whole HH, so how it is even possible it's so boring?
Mechanicum? Cool story bro, too bad it's boring.
A Thousand Sons? It's one of his better works, but it's still the same author.
Vengeful Spirit? Again, cool ideas and a bit better than A Thousand Sons.

I would have read The Crimson King and The Fury of Magnus, but I mean, I have a limited time on this earth. Why spend it on this guys bad writing?

So, how do you read Graham McNeil? I discovered the most pleasant way of reading him is to lightly skim all the boring ass shit to get the gist of what he's getting at, indulge in the occasional good parts, rinse and repeat.

If you want the whole Horus Heresy you unfortuntately kind of have to deal with this guy.

Also, I agree with your assessment of the first four books.

The Flight of the Eisenstein remains one of my favourites.

Yup. I'm all with you!

I wonder if TS is so fondly remembered just because the last 10% is actually good. The Sons coming together for a final stand despite the betrayal of the Emperor and their own primarch, that’s all super interesting! If it started at the Council of Nykea chapter, TS would be a great novella.

This is a great take and I agree. I also quite liked the beginning, with the Space Wolves crashing their party and being assholes all around. Made for some nice drama! And another part I remember as being cool is the warp where Magnus is a big idiot and gets tricked by Tzeentch, resulting in the big badaboom.

As for the other books in the series, I followed this reading guide and these are the ones I read. Exclamation point beside the ones I thought were great.

Horus Heresy

• Horus Rising (!)
• False Gods
• Galaxy in Flames (!)
• Flight of the Eisenstein (!)
• Fulgrim
• Legion (!)
• Nemesis (it is pretty cool but not necessary)
• Mechanicum (cool to see Mars get corrupted, but not necessary)
• A Thousand Sons
• Prospero Burns (!)
• The First Heretic (!)
• Know No Fear (!)
• Betrayer (!)
• The Unremembered Empire (!)
• Fear to Tread (if you like Blood Angels, then sure)
• Pharos (it has some good parts, but yeah, skippable)
• Scars (!)
• The Path of Heaven (!)
• Angels of Caliban
• Praetorian of Dorn (!)
• The Master of Mankind (!!!)
• Wolfsbane
• Vengeful Spirit
• Slaves to Darkness
• The Buried Dagger
• Tales of Heresy (I only read Blood Game (!) and After Desh'ea (!!!), read The Last Church if you want to read McNeil try his hand at theology and the Emperor)

The Siege of Terra

• The Solar War
• The Lost and the Damned
• The First Wall
• Saturnine
• Warhawk
• Echoes of Eternity
• The End and the Death Volume 01