Just for fun, you can change the size of your active and nonactive cards:
Use internalz and edit /etc/palm/luna-platform.conf
You'll see the following lines:
In the screenshot, I have the activecardwindowratio at 0.75.
There's some other stuff in there to play with as well. Anyone know what EnableSplashBackgrounds does? I set it to true, didn't notice anything different.
update: App tray info