You're welcome Hugo.
As someone else said "it's a gear grinder for me!" ... a bugaboo
anyway... we don't have voice commands yet > "computer > copy group "abc" to the start screen" program complete
We used to have to create shortcuts and save, copy and paste them somewhere. Now, in 8, its pin and unpin. My focus is on pinning to the start screen only those needed frequently...others have their own preference.
It's all pinning to the start screen or unpinning from the start screen > same difference.
As far as clicks go, 1 click or 3, it's still easy.
If one is at the desktop screen, then go to charms, click (magnifying glass > search),
at this point one would be at the all apps area. Unfortunately or not, the autohide feature of the edge UI keeps it out there until one presses escape or clicks again. Also available from the start screen or metro IE or anywhere else > charms to search and click "apps."
There are some folks that like to have 70 or 80 tiles on the start screen which I think is a bit much. That is their preference. I try to limit the tile count to 12 or less, usually, ... doing frequent work on the desktop, one could pin or unpin things to the taskbar as well.
HG's sticky thread is useful, helpful. Comprehensive. "Some of us" here, have been using 8 as their primary OS for almost a year. My preference is to not be in favor of group blocks on the start screen, because they tend to duplicate what is in the all apps area and my field of vision is less offended by a minimal number of apps and tiles on the start screen.