For those that didn't use layers much, well of course it won't be missed.
But I used layers a LOT and I was fast at working with them. There were issues that needed fixing, and perhaps these were enough to put some people off, but the workflow of layers is not replicated with lanes for audio work. Not for me, and not by a long stretch.
I like lanes for automation, it was something I asked for, but I'm glad they kept the X1 way of working with envelopes for those that preferred the "old" way. Layers should be there for those that prefer that way of working.