IP works totally fine for me on win 8.1. But the gui is slightly outdated, compared to newer wb and deskscapes versions (no kinetic scrolling ).
Soundpacker does not run on win 8, at least I'am not able to install it. Even though there are only 2 usable themes (in my humble opinion). I still would like to use it!
Of course a tool to make the tiles background color exactly like it was on win 8, would be really amazing! It is a lot harder to find a specific icon on 8.1. The background happens to have a color which is similar or exactly the same as an icon has or is mostly made of. Who came up with such a stupid idea?
I still consider a "downgrade" to 8.0 cause of that.