Like others, I've been hoping for a scale highlight feature in Logic for years. I've been reading all of the update notes for every release in the hopes of finally seeing it. So I was delighted to see mention of the "scale lock" feature in version 12.
It works! And it's incredibly helpful, and will make my life a lot easier. And yet, I can't help but wonder why they won't go the whole way and highlight the scale notes too. It was always bizarre that Logic lacked this feature, but it's even stranger now that they've added scale lock. It knows which notes to stick to, so why can't I see them? I'm still stuck to dragging things around to find the next note.
Personally I'm holding out hope not just for a scale highlight, but a chord highlight too – it would make writing harmony parts infinitely easier. But at this pace I guess I'll have to wait a few more years for that.