I can say, for me, when editing, mixing or otherwise viewing lanes, I nearly always find myself expanding and contracting them, getting routinely disoriented in the process. This is the pitts when AutoZoom is enabled--not friendly at all. I know the Mute/Solo buttons are easier to click, but when using layers in X1, if you've enabled layers, they remained enabled indefinitely. In contrast, in X2's lanes, if you need to contract a folder, for example, then go back into it later, invariably I have to re-expand the lanes again for a specific track.
Layers were cleaner and easier to navigate for me. Lanes are a pain to navigate. So, for me it's MUCH slower to work with lanes vs. layers.
I think just fixing the bugs and setting up a couple of ways to make managing lanes a little easier would help tremendously. One hint is to color the lanes a darker or lighter color than the track. Also, when solo-ing a lane, I would like to see that lane be the one that is displayed in the track "picture"/waveform vs. only the
first lane whether it's solo'd or muted or not.