Okay i finally understand the purpose of our physique. It enables us to cultivate like a maniac. Like TW said, breathing is essentially cultivating for those with Chaos Origin Physique and our top tier meridians. It also gives unprecedented understanding of Dao. Every art we cast doesnt require concentration but a thought and only Qi, even that in spare amounts compared to other cultivators. TW's GS is of transcendent level meaning all of our arts are of the highest level with respect to our cultivation stage. Currently as a PH, our arts must be the strongest there is most probably even above Ruo's mastery over sword art (He even says so in the pov). Idk if half dao seed counts enough to contribute to his art, and if so i wonder what level it is.
Ruo also has the best karma and we have the worst since heavens hate our physique and the fact that we are essential TW. If i understand correctly, karma is basically heaven's opinion of you, and if their opinion is high, they help you and if low they scheme against you.
After finally reading again inculding the content i missed (didnt do demon route and mei yet cuz im lazy), the reason why Yichen was so powerful was cuz he formed his own dao seed. Im sure fire element is his dao path. He formed his dao seed after he reached 1000. Apparently it takes 5000 years for good cultivators to sprout a dao seed. LB says he's not aware of it but i doubt it. He did talk with TW long back, maybe he helped him form it, no way he formed it on his own. So based on this, My hypothesis that prime BP MC with GS = TY is wrong since i forgot to consider we need Qi to actually use our GS effectively and we didnt even have dao back then. So yeah niki was right, BP MC with or without GS loses against TY. I dont even know how MC got dao seed without any dao path during the expedition. Im sure its the differentiating factor, dao with GS means easy top level arts but prone to exhaustion quickly due to having no qi. Maybe im wrong about all this but it made sense to me.
So im going to say something shocking now, After reading again i dont really find problems with the powerscaling. Niki is doing a fine job in regards to powering up MC but he has his faults tho. Fights are not creative enough, MC fights like a barbarian with 0 skill. And i still think Niki will adress this. MC does think to themself that they totally forgot about their IE arts after getting dao. Niki needs to flesh out the main characters more. Ruo is a perfect antithesis to Wu heir in some ways yet he barely touches on that. Both of their circumstances surrounding birth were vile and tragic. MC essentially killed the real Wu heir unknowingly, caused the death of their mother, and crippled their father. Ruo was sealed with more than 1000 dragon souls within him, his birth essentially contributed to the genocide of dragons and awakening of SLM. His aunt called him an abomination even before he was born while Wu heir's aunt was basically the opposite. Ruo's uncle is fun and loving while Wu heir's uncle is cold, distant and hateful. Wu heir was given freedom in their upbringing to be whatever type of person we wished but Ruo only had one path forced on him. It seems obvious that Niki intended to parallel MC and Ruo but he cant find the opportunity or maybe even forgot about how important the rival character is to MC.
Niki has clearly thought out MC as a character but kind of started to stumble in certain places after the expedition. Lets hope he got back his footing and writes peak.