I'm working on a huge project with Blizzard's Action Battle System: http://forum.chaos-project.com/index.php?topic=106.0 and since the battle system allows pixel movements, I was wondering if it was possible with a script to diagonally split up a tile, so you could walk on only the half of it, and create an isomtric level design like this: http://img695.imageshack.us/img695/6406/battle2.png
Thanks!
You can just graphically make it isometric. If you use a high resolution pixel movement (i.e. setting 4) with Blizz-ABS, you won't even notice that it's actually tile-based.