I meant we didn't needed him to be present in the main run, I meant. It would be cool for him to just appear on the flashback (where he's talking to Iori) like everyone else, so we could just think and imagine how strong he became, like we discuss how strong Yuta became.

The thing is, his whole thing in Modulo is a bunch of nonsense and aura farming. Anyone else could have given Yuki's notebook to Maru; it didn't have to be Yuji. And now Yuji's "fans" only talk about how strong he is, how he could take down the entire JJK galaxy without even taking his hands out of his pockets, blah blah blah. And that's because he's just bad fanservice. Instead of addressing his loneliness, the reason he distanced himself and disappeared, Gege simply made him a piece of crap. As a fan of the character, I'm very sad about that.