What's the LAF, just wondering.
To add to Slapshot's answer, Java has this "look and feel" thing that is basically a global theme for the standard components in the UI - buttons, scrolling, text, etc - and changes colors and actions. Before, the UI used a LAF chooser. Now, the UI uses custom skins, and the LAF options have been removed by popular demand.
The native Java UI components are a bit...clunky and unrefined looking, and the LAF stuff just clunkifies stuff even more, for not much improvement. So it's out.
I liked using the space bar in draft and also using the right mouse button to pick selected cards (using arrow keys) without using the cursor, it would be awesome if that could come back, but I doubt it will, sadly.
This can surely come back - but the trick is reminding me in a week or two over the the Developer's Corner forum, I spend most of my time there. There's two threads for the Match UI (Round 2) and the Home UI (Round 3) where requests like this can be made specifically. I'm taking a bit of time off at present but drop a well-placed hint in a week or two and it'll be back before you know it. Or, I may just remember already after writing about it.

it should either be renamed or removed, especially if it's not doing anything.
+1
On that note, there's a few things in the "settings" panel in the home screen that as I was making them, I wasn't sure what they did exactly, so the text description is off. If a dev happens to notice this, there's two or three descriptions that could use some clarification.