KarinsDad said:
Who says the game has to be cinematic?
Why is it WRONG to have a game that is less cinematic and more plausible?
It doesn't, and it isn't.
However, you are basing your opposition to "Cleaving on an AoO" on a particular, non-rule-based, cinematic (as in, "flavor text the DM says when my character does something") reading of the feat. You then claim that, because this particular point of view leads to undesirable results, the combination itself is undesirable.
Therefore, the problem is not necessarily with the rules itself, but rather with the cinematic reading you have added to the rules.
In other words:
1. A + B = Allowed by RAW
2. A + B + C = Stupid
Therefore, A + B = Stupid
where A is Cleave, B is AoO, and C is your particular cinematic formulation.
It's pretty easy to see, however, that this sort of logic doesn't really hold water.
Get rid of C, because it's C that's causing you problems, not A or B.
I don't expect a position switch at this late date, however.