what about
Units that choose to overwatch become
Init 1 in
CC. Makes sense, they are to busy trying to shoot to fix bayonets or pull a knife.
That initiative thing you suggested is horrible though. It makes Eldar even more amazing then they already are. Few armies have High initiative. hell my best character has like Initiative 4

.
Making "Run" moves a flat 6 would be helpful to, guaranteed 7in movement every turn means I can get my Footsloggers across the board quicker.
Keep in mind it isn't so much that
CC itself is broken, its that it is EXTREMELY hard to get
CC units to where they need to be. Loading your
CC units into transports is nice and all but those transports usually explode, or in the case of Orks, theres not enough Room inside Trukks to take a good sized boyz squad to bring into
CC. So what your left with is a bunch of points invested in getting a squad of
CC guys close to the enemy lines and all the opponent has to do is put a few Anti-tank rounds into that transport and poof there goes your hopes and dreams.