Just my opinions here - I love the idea of showing the gun icons for each character. But, I'm not so sure I like the idea of showing you your exact percentage chance to hit before you get to a spot. That seems a bit too gamey.
You would not know this information in real life, and until you move to a spot, you can only guess at how a clear of a shot you might have when you get there. Also, just the act of moving would probably decrease your chance to hit because you'd have to quickly settle into position and take the shot.
But, I'm ok if the developer thinks it's a good idea. It would certainly make the game a bit easier to plan your movements, but I don't know if I really want that.