I've been planning what I am going to spend my skill points on in skyrim and when I totaled everything up, I didn't have enough to get Extra Effect. I really need to get get muffle, but I already have made enchantments on all my equiupment. I'm suggesting that if a player maxes out all the perks in a skill tree, they get a bonus which they can remove to put on later or keep it on. The bonus for the sneak tree should be Complete Silence. It should work like this. Any thing you do does not make sound. Not walking or running or anything. Not even pulling out a weapon, although maybe make pulling out weapons and using spells and shooting bows and swiping swords make a tiny noise, but less than a normally. The sound would not be heard by others because it's your weapon. I just really want to be stealthy. You could still be detected if you damaged an enemy or other things, but you would be silent.
Just a suggestion that will probably never be implemented into the game. But what ever.