hmmmm...perhaps a way to clone his body? have the emperor take his gene's and other critical things and then we push his soul into the soul-stone, all the while carefully insuring as much of his personality remains intact as possible all the while healing any spiritual damage done by the nails. this way we can reconstruct Angron if possible.
the other way is to re-calibrate the nails influence on his brain-chemistry...such as limit its entire affects on violence, and instead become a sort of berserker button that Angron can push...sure he might dull down on the whole anger issue and other emotions, but at least he wont be DYING because of the nails being active SOME of the time and not ALL THE DAMN FUCKING TIME!!!
this would be EXTREMLY delicate and require a shit-ton of runes and other shit to slowly reorganize the damn thing both within the warp AND in reality. require dad-emperor, Magnus, perturbo, and possible some other primarch's nearby to help out. This could be a extremely big boom for the world eaters as they can become Lucid Berserkers on a whim instead of all the time, using the increased battle powerss when necessary as part of the legions fighting capability, allowing more creative and terrifyingly level of competence than just charge at something and hope you get within axe range.
Plus Angron's damn bodyguard could actually do their damn job for once.
On that note: we could end up having one of the most violent Primarch's acting as the super-overprotective big brother who would end up causing a massacre or two because of some imagined slight against Sera's honor. consider that some Xeno's species is going to sooner or later insult her very existence and be complete assholes in such a way that Emps or the other primarch's nearby will launch another grand crusade to completely and utter destroy any trace of them both within the veils of reality and within the twisted nether of the warp...removing their trace of existence from reality and the fabric of creation.
or as the emperor calls it (omake on the way!) *edited for future profit*
THIS IS THE REASON WHY I DONT WANT TO HAVE DAUGHTERS AND I LAUGHED WHEN MALCADOR ASKED WHY I DIDNT....I GET TOO PISSED OFF AT BOYS TRYING TO DATE THEM OR DO THINGS I REALLY DONT WANT TO TALK OR THINK ABOUT WITH THEM!!! MY BABY GIRL'S NOT YOURS!!! NOW GO FUCK-OFF TO THE EYE OF TERROR WITHOUT A GELLAR FEILD ON AND LET THOSE DEAMONS DO TERRIBLE-TERRIBLE SHIT TO YOU LIKE WHAT THAT ONE ULTRAMARINE CAPTAIN LET HAPPEN TO THOSE POOR SODS IN THAT ONE CRUISER THEY WENT ON TO GET SHIT DONE IN THE EYE OF TERROR!!!
ALSO BANNA BRAIN, WHILE ON THE SUBJECT OF MY PRECIOUS BABY GIRL...WHY HAVE I NOT SEEN HER AROUND THE IMPERIAL PALACE? IS SHE ALIVE? IS SHE DOING OKAY NOW THAT DAD'S KIND STUCK ON THIS FUCKING THRONE EVEN THOUGH HER BEST-PROJECT OF MAKING THE INFINITY CIRCUITS OF MANKIND TO PREVENT CHAOTIC ASSHOLES FROM TAKING THE SOULS OF MANKIND THAT ARE ACTUALLY FUCKING LOYAL TO THE IMPERIUM AND HAVING THEM HELP ME GUIDE THE IMPERIUM'S SHIPS TO GETTING PLACES TO GET SHIT DONE IS DOING? ALSO BECAUSE I THINK SHE FROGOT SOME KIND OF MANUAL EVEN THOUGH I HIGHLY DOUBT IT BECAUSE IM GETTING WAY STRONGER THEN WHAT I SHOULD BE RIGHT NOW...BECAUSE I THINK MY SOUL-FRAGMENTATION ISNT REALLY HAPPENING BUT IS CONDENSING MY SOUL TO THE POINT WHERE IM BASICLY BECOMMING A HYPER-NOVA IN THE WARP RATHER THEN THE SUPER-NOVA I ONCE WAS, ALSO IM NOT ROTTING OR ANYTHING, JUST REALLY THIN FROM NOT EATING ANY GOOD TACO'S FOR AWHILE.
WHY ARE YOU BEING SO QUITE?
IF SOMTHING HAS HAPPENED TO HER YOU WILL TELL ME OR OTHERWISE I WILL DESTROY THIS GALAXY AND ALL WITHIN IT WITH ONE MASSIVE FUCKING WARP-STORM OF MY PURE-UNDELUTED-PISSED OFF-MAKING_KHORNE_TELL_ME_TO_TAKE_A_CHILL_PILL_INFURIATEDLY-PISSED OFF!
SO TEL ME RIGHT NOW WHERE SHE IS, WHAT HER LADY-LEGION IS DOING, OR SO ME HELP YOU I WILL BE THE END OF YOU AND EVERYONE YOU CARE ABOUT.