Fair enough, but you could get A LOT more information on a 30 inch 2560 resolution or whatever. You would see a lot more of the map/units, but they would be tiny. On a 24 inch monitor it is tough to tell a marine from a ECV. Playing it on my 46" Samsung 1080p LCD HDTV is awesome, you can easily tell the difference of every icon. I think scrolling around the map is so annoying, it would be great if we had monitors with the resolution and size to show the whole map without scrolling, but that is a pipe dream, for now 1080p fits the gaming bill best.
Actually no that is incorrect. The field of view is exactly the same at all resolutions. If you play at 1680, 1920 or 2560 you will see exactly the same amount of terrain and units. Blizzard has done this to avoid giving people with more cash for larger resolution screens an advantage over poorer gamers
So the units will only become bigger on larger screens, the ability to see more does not come into it. That said I prefer to play on my Dell 30” opposed to my 50” Samsung as it looks much sharper and in all honesty is just easier to play.