I like the comparisons to Riquelme, Silva, Hleb. Much more than Iniesta.
Silva and Riquelme are two of my favourites, I think Pedri is so far much more alike Riquelme than he is to Silva, and out of the three, I think Silva is the only one who can really work great in a 4-1-2-3 (especially in his later years). Riquelme was a 10 and Hleb was a winger and a much worse player than Pedri, as said.
I don't like 4-2-3-1, and I'm not sold on either Pedri or FDJ in a 4-1-2-3 (even more when they both play at the same time), but the current midfield setup in todays game is still very good compared to many alternatives.