I think it would be more informative if the logo (logo4.gif) changed when you went to the IPS Addons like Gallery, Blog and Download manager.

To specify though, I'm fine with the way it is now and I have no idea how it would be done, but its an idea.

I agree, I did this with a little modding a while back and I definatly think it should be added in.
Perhaps not only just blog and gallery - a components setting for the logo would be great.

It's not hard, just where it calls logo4, do an if statment on automodule/autocom/act.