Wow, that's the second time I get the impression that one of "my" (ehh, probably not, but don't ruin my illusion
![Razz :P](http://gamesas.com/images/smilies/icon_razz.gif)
) suggestions are taken into account. I kept yelling for an opacity slider when everyone else thought an on/off switch would be just fine. Now there is opacity control available for game on screen elements, which can be utilized by modders for other stuff (I don't know if it had it before, or what could be done).
For me it's not because I don't want on screen GUI being intrusive on my immersion, but to be able to hide information I don't really want in order to make the game last longer.