What was Lorgar's intended purpose? He seems to have been the weakest Primarch by far. Worse at fighting than pretty much all of his siblings, no particularly outstanding psychic gifts to make up for it, little interest in war and fighting... Why would the Emperor want a Primarch like him?
The Emperor didn't
But that because the Emperor was brilliant at wasting the potential of his underlings.
Lorgar is one of the primarchs whose talents were wasted on war.
He was a great motivator, a political reformer and a builder of societies. He was in many ways a spiritual Guilliman.
If he, Guilliman and Fulgrim had been given to Malcador and given positions in the Administratum the Imperium would have been so much better.
But then the Emperor not going Full Fedora might also have helped.
To be fair, Lorgar was created to be one of the greatest soldiers in the galaxy and his purpose was to lead the Emperor's armies while daddy governed and did research. The enormous expense of creating a primarch seems wasted on menial bureaucratic labor that does not actually require their massive size and power.
They were lost assets the moment the Emperor forgot to put warp-proofing on his doom fort.
After that all primarchs were salvage.
And also keeping the Empire is as important as conquering it.
And daddy wasn't governing it. Malcador was. Daddy E was fucking around with tings in his basements he didn't understand.
I'd like to see someone with "no particularly outstanding psychic gifts" take two blasts from a titan-mounted Plasma Destructor to the face, and live to tell. Oh, and this is when he was barely aware of his psychic talents.
>no particularly outstanding psychic gifts to make up for it
He's 3rd or 4th most powerful human psyker depending where Malcador places. He's strong in that department. In Betrayer he tanked two charges from warhound's plasma destructor (although he was badly hurt by the second blast, he healed the wounds on his own). Same book, he was performing the ritual to turn Angron into daemon prince and defeated WE's librarians and War Hound-era dreadnought who were trying to prevent it from happening without the ritual breaking.