[masswerk]

BTW, you can set the orientation of the Dock in Mac OS, but it will be always centered at the edge it's attached to.

(So you can't pin it to a corner like the top left, nor can you force it to extend over the full length of that edge.)

And you can extend the Dock in many ways, by adding folders or stacks, make them behave as menus or grids, ect.

[JonathonW]

You used to be able to pin it to a corner-- it was removed in 10.10 (IIRC along with a rewrite of the Dock itself) and never came back. Which is unfortunate, because a top-aligned Dock (on one of the sides of the screen) is way more predictable than the center-aligned Dock; pinned items never moved (unless it overflows and items start shrinking) when the Dock was top-aligned.

[masswerk]

Well, UX, as in "appearance first". (My own pet grief is about the loss the of custom icons in the Finder's side bar. I relied much on those for quick navigation. Now, I have to read… I've still an old Power Mac with an old OS around, and I'm much faster on this one than one any newer machine.)

[etrautmann]

Yep, and auto-hide the dock. I use an application launcher + cmd-tab for virtually everything