So we have the origin but why is it still retained?
Tradition is only thing I see that has kept it as camogie and it is hard to rebrand anything that is associated with a particular subject for so long. Probably seen as being more genteel that hurling and thus differentiating it from one another
There are slight differences in rules between camogie and hurling but are slowly being synchronised with one another. eg 15 a side, pitch size but 45s not 65s size 4 ball not size 5 even for adults
Camogie goalkeepers wear the same shirt as they do not enjoy the same rules of protection compared to hurling goalkeepers in the small square as camogie is a non intentional contact sport. Incidental contact is allowed but deliberate contact such as the shoulder to shoulder charge (but it happens a lot mainly due to the influence of hurling coaches managing camogie teams and who are not aware of the no deliberate contact aspect of the game)
Before Cusack formalised a set of rules for hurling there were many forms of "hurley" played throughout the country from "shinney" in Antrim Donegal and what was known as "commons" which were played mainly in the winter. The form of hurling we know today was the from that was played mainly in the summer and prevailed mostly in Leinster and Munster under the patronage of the landed gentry
Like all sport it evolves from mostly being played on the ground to the possession game we have today just look how the shape of the caman has changed through the years
Round our way there's a townland called Aghacommon meaning "hurling field." The Commons game you mention was closer in appearance to Scottish Shinty.
I always thought the hurling-shinty could be played up more as a means of getting more northern protestants into the game. It's a part of their heritage that could use a revival.