Like many of the posters, I don't like the virtual dice. Real dice are such a staple of table-top RPGs that I can't imagine rolling a virtual die. If they're gonna go virtual, don't bother rolling but just show the result.
I noticed line-of-sight was marked, that's really cool. Of course, the DM has to manually specify the line of sight on a separate screen, and that's not very cool (why not let the DM specify 3d objects and have the app figure out the line of sight?).
The monsters need to move faster, it would get annoying seeing them slide that slowly.
In 3rd edition, it's Attack of Opportunity. In 4th edition, it's Opportunity Attack.
Using a control object that gets placed on the surface and pops up a radial menu is a great idea. What happens when you have some new supplement that isn't loaded into the software yet so you can't pick your new ability? They'll need some kind of manual override that lets you use a generic power.
Instead of real minis, the players might as well get virtual minis, just like the monsters are virtual minis.
The Surface is only 30 inches big - the map sheet that my current group uses is probably four feet long by two feet wide. The Surface can make up for this by zooming out, panning, and zooming in on a different area. Lets hope they remember to add zoom and pan to the command list.
Last but not least... Thanks for sharing! That is a cool concept they're playing with.
