If you want to learn more about the whole BAR stuff, wakain, go here:
Back on topic again: I'd rate this at 4.5.
It doesn't deserve the full score IMO because the archer's texture isn't that exiting and no model mods are included... Some animations seem a bit weird as a result of that, and it doesn't look that new either.
However some other textures like the shields and the ones of the cavalry are very nice, and the custom sounds and the BAR installation certainly add to it, too. The icons were nice, too. It's nice to see what one can make out of AoM's existing models :)!
Conclusion: As I said, a 4.5 IMO. I wonder why this isn't possible in the modding section... In other, less important sections of the DL centre it is.