Everyone has their own definition of productivity, and their own vision of how best to achieve it.
For my own part, I get more done by avoiding all the desktop doodads and whirligigs. I have my own faint streak of attention deficit disorder to contend with, but I would suspect that a lot of the desktop gadgets and tools that people consider essential to their day-to-day tasks … are really just stealing their attention away from the things they should be doing.
So I stand by my answer to that thread — that the most productive desktop for me has been one without any superficial layout or oddball keystrokes or hot-wired graphical arrangement or esoteric time management software. You’re free to add or subtract from just about any desktop or packaged distribution, just as you’re free to build up from nothing and fine-tune every last option. That’s the beauty of Linux.
But I still feel less is more. Take away the distractions and you will find yourself getting more done at a better pace, and if that’s what you mean by “productivity,” that’s what I mean by my answer.