I actually find more of slowdown from having wallpaper than from having icons.  That's why I originally punted the wallpaper, and now I'm used to it.

In any case, Poser is just a hobby for me.  I do a lot more than Poser on my computer, and I'm not going to make it less convenient to do other things just for Poser.

I don't have any complaints about Poser being slow, anyway.  At least, not since I upgraded to Pro.  64 bits made a world of difference.