1. The icons can be moved around. I just switched movie and computer to check, and they did switch places.
It only takes up as many areas as you're using. I started off with just the default activites and have added computer.
I know you can make your own custom backgrounds and icons for channels/stations but I'm not sure if you can make your own "TV" symbol.
2. It found my Pioneer 1014, Infocus 4805, Sony n88, and Apex 2600. I got my Sherwood 2030 off ebay for my bass shakers and I have no idea how old it is. I didn't have ther remote for it either. The Harmony said it didn't have the 2030 in its database and asked if I had the remote for it to learn the functions. I said I didn't, and it selected a newer model (4030) to try to see if those codes worked. The input switching, power, and volume all work fine on it :thumbsup:
Worst case is you'll have to have it learn all your buttons individually on the remotes, but it will work.
3. As you can see in my "Auto configues remote" picture, there's a big grid for each function. You can make each button on the left side (each corresponds to a button on the harmony) do whatever you want it to. If I have it in DVD mode, I could have buttons on it control my DVD player, projector, receiver, or bass shaker receiver. I don't have to do any switching until I want to do another activity. Then the components I'm not using turn off and the new ones I need turn on. Components that are used in both activities stay on (it remembers what's on and what isn't).
In my picture you can see the default settings. (Actually the TuneDown/TuneUp is left over from radio settings)
Most of the buttons are assigned to the DVD player but since I told it I use my receiver to control volume, it assigned volume and mute to the Receiver.
Each of the blue pulldown arrows has the complete listing of fuctions for that device so I could have any button do any fuction from the list of devices on my list.
I took that pic before I added my Sherwood receiver, so now DVD, TV, Stereo Receiver, and Stereo Receiver #2 are on the grid.
Did that make sense?