If you think it is overpowered then switch to mortars. That is what CA did to an effective weapon when multiplayer types were complaining...

I never have trouble fighting with little or no artillery and I welcome battles where the enemy has a load of it.

It is a matter of how you deploy your troops and the mix you use. I am sure that if the AI made good use of light dragoons you would tell us that they are overpowered and that they render artillery useless...which is somewhat true...

The most artillery I ever use is four pieces. Two cannon and two howitzers. I may go with three galloper 6 lbs. at times but I have no trouble fighting with only one gun. I would fight with none but then the AI garrison's every building they can find and I don't like having to root them out.