No reason to. The combo tiles do this very well, even better than simple shading. I should say where aerial tiles exist, this pseudo shading is pretty cool. Though at times the shading direction changes because the position of the sun is different. Play around with the contrast and brightness controls under the Window menu|Image Processing. I've always liked this view. Works great in 3D too.
BTW Scott, as it was pointed out in a different thread, the way contrast and brightness changes the entire desktop and other apps is very naughty behavior. On my machine it makes it difficult to switch to other apps and use them due to blown out whites and contrast. Also, the sliders on the dialog box on the contrast/brightness go up and down by 2s. It's kind of annoying if you're trying to hit a specific number, like returning it to 50. (update- never mind, I see you've added arrow support so the sliders can be nudged 1 unit at a time. Wouldn't hurt to have the slider's value shown all the time and incremented as the arrows are pressed. Purely user friendly issue though.
Checking out ver 3.0 for the first time. Will submit any bugs I find.
Will also send some more moola. Well worth the cash and always like supporting the little guys.
Steve
Tucson, AZ