I'm not sure if I got your question right, but thr 1st Lloyd—the arrogant one, wished when he was being reincarnated that maybe he cpuld be someone the everyone is glad to meet. Where in the furst few chapters, the messenger mentioned to the 2nd Lloyd—Suho that he has a wished that transcends all space and time that's why he's there.
Basically, the world choose to put him in Seoul and give him a hard life to train him to be the person he wants to be—hard working, resilient and intelligent. So that once he became that kind of person, he's ready to live his life in his original world with better decision makings. All of these he's unaware of
I mean, this is a pretty reductive view, just because it's basically the same soul reincarnated, it doesn't mean it's the same person. They have no memory or awareness of being each other's reincarnation and they even exist at the same timeline at one point which makes it clear they're 2 distinct individuals.
Humans are the sum of their experiences, thoughts and actions and both of them have had completely different lives that made them who they are. If I got reincarnated as a dog that doesn't mean because the 'soul' is the same the consiousness, the brain and ultimately the 'person' is, I'd be just another average dog. Suho is still Suho, he just was the actual Lloyd in his previous life. Which doesn't really make any practical difference to him, it's just for the story and for it to make some more sense he was suddenly isekaied like that
It's just that this explanation that they gave for him being isekaied wasn't needed. It was just for a "whoa, look, a plot twist" moment. It's not like anybody was questioning why he was isekaid in the first place.
In the novel, the ending is very similar and Lloyd stayed as Kim Suho, and their explanation made much more sense as it read:
"There's no longer a Lloyd Frontera body here. It dissapeared along the gate of reincarnation. I'm here now in the body of Kim Suho. Thanks to that, the restoration of fate didn't happen again" That is an explanation that actually added to the plot, as ok, the demon king was killed, but it wasn't the demon king that made the unfortunate events happen, it was the restoration of fate.
I don't know, maybe I'm just being stinky, but I think that they just kept Lloyd as Lloyd in the manwha because of his iconic facial expressions, regardless if it took away of his character arc before.
That's just my opinion though, if it makes sense
That actually makes sense, but I think it just makes his story arc from before pointless. Like, if he was always Lloyd, all his worries from before that I mentioned were nothing, since he was always meant to be Lloyd.
I mean, the history made a huge deal of his problems, it was a huge part of the plot and of his character, and then we discover that all the build up and all of these worries were pointless because "it was always meant to be".
It's like having a story about overcoming difficulties even if you're talentless and then the character discovers they were destined to be great and weren’t talentless all along, actually, they were the most talented of all. Then the story isn't about surpassing the difficulties of being talentless anymore, get it?
Honestly, it was kinda disappointed to me, especially because in the novel, the ending didn't use that and didn't throw all his character arc in the "worried for nothing" trash
For me this specific desicion was pretty neutral, it neither added nor took away from the story, but if you're telling me the novel and source material had another and probably even better version, I find it perfectly understandable that it would leave a bad taste and be a bit disappointing.
I actually would have prefered him keeping his original body (Suho's) after returning as well, because it would singify finally being accepted as for who he really is or sth, but I reasoned the decision to change his form as it being a lot easier logistically for the rest of the people that knew him by that point. Like, his family might accept him and maybe even his fief would comes to terms with it but how do you explain it to the nobles and diplomats and every important person that simply wouldn't believe he is Lloyd.
Anyway, I definitely believe it's okay to not like this, it's just too much of a detail for me ig

I feel like making Suho stay as Lloyd doesn't make sense.
He was just born in the wrong world and the characters liked Suho for himself, even if he wasn't Lloyd. It was a great deal before for Javier to be the only person to know that Suho was Suho because it meant he knew who Suho truly was, he knew he wasn't Lloyd, he knew Suho lied to everyone about it, and still decided to trust Suho.
Suho himself knew that he wasn't Llloyd and was lying to everyone, and was afraid of them discovering the truth.
I mean, a huge deal of his character arc was his fear that he wouldn't be confident and liked if he wasn't in Lloyd's body. Him realizing that it wasn't being Lloyd that made him amazing, but that Suho himself was always amazing was a huge deal. So why did they make this nonsense of him always being Lloyd and staying as Lloyd???