Only two things in everything you’ve said that I slightly disagree with (more subtleties than anything). For the #10 I don’t think it needs to be an #8 type per se, it just needs to not be a dominant playmaker - so you could therefore have an #8 type like Gullit, or alternatively a goalscoring #10 like Kaka. I feel like the latter is a better fit with the rest of the midfield, as well as having that electric pace which was perfect with Pirlo.
Second thing I slightly disagree with is on Pirlo’s passing options, agree he’d love to spread it wide but imo the most devastating passes Pirlo would play were through the lines centrally (no surprise given he’s played most his career in diamonds). I think with Pirlo the most effective passing options you can provide him with are those balls over the top or through gaps between defenders - basically the type of run Romario would make as his bread and butter playing on the last shoulder. Similarly for someone like Kaka breaking through the lines was a core part of his game and there’s probably no one better than Pirlo at picking those central runs out in congested central areas.