I agree that rules do not need to be complicated for sake of complexity, the opposite is also true, I am personally not a massive fan of random charges especial when the variables are rather large, infact I think this is one of the biggest issues with 8th ed, as it standards it seems that everything is handled by dice, with this mind I feel I have won most of my games because I am simply rolling more dice than my opponent. So to you point of fun, is option 5 actually more fun than option 2 or 3? how can it be? Option 5 is very similar to the other options, none of these options will take longer to resolve than the other.
With the posts I am seeing here I don't see why you even bothering to try and change the BRB, option 5 isn't all that different from the BRB, you just roll less dice, its still just as random and the difference in charge range still isn't going to be all that massive, at the end of the day its just one flawed system replacing another, I do appreciated however that DoN is tried to make a compromise.
For me however the altered version of Anilar's works better for me, I may well start my own project for 8th ed as clearly I am unable to agree with any of you on the issues here.