How about only making the [Organ Gun] replace the [Falconet] for the French, while the British can get the [Saker] cannon instead of the [Falconet]?
The Saker cannon was not only used by the English but they did apparently use it very often. What makes this cannon interesting is that it fired a rare round shot that was intended for bouncing along the ground, in order to cause as much damage as possible.
I made a post where I suggested that this cannon could be added to the game:
(1 new trainable unit for the British, Dutch, French, Chinese and the Japanese)