Yup lol. Like him or not you cant deny Lion pulled a serious dick move, and it came back to bite him. I suppose I do need to throw out props for my man Angron. The only Chaos Primarch to try and get shit done.
I'd have to say Angron since he has the most Orkishly appropriate ideals plus seeing a bezerker type character whose specialty is dueling rather than buzz-sawing through masses of enemies is a novelty. That said Konrad is also a contender definitely one of the most interesting as the embodiment of Mankinds Fear (Just as Girlman embodies Mankinds free will) and as possibly the only Primarch who truely knows what it is like to be afraid, to fear.
Or... they either so disgraceful that the imperium erased them from all records to ensure that no one would learn of the imperium's disgracefulness. #imperiumpropaganda
Your primarchs were there at the time of the [all data deleted] too, I swear someone needs to get the tome of all that is grim and dark in the 41st millenium and teach you whelps a thing or two