I agree that the action could be spruced up a bit, and I can see where the suggestion of adding more timers makes, sense, especially in the scenario he stated.
Another thing about the action, and this applies to several TPS games, is the way the battlefields are layed out. Everything seems the same, just the layout and textures are different. The cover is always the same height, size, and shape. I know when enemies are about to pop out because they have obviously set me up some cover. Just a little nit pick.