I agree with Pusser here. What would happen if the Army said no more Governor General Guard and changing of the guard on Parliament hill in the summer because I am short staffed in my battalions? I think there would be an uproar. There is a need for these type of displays in a Nation's capital that convey military strength and the pageantry of our military history, and it is part of our job. The same goes for the Tattoo with regards to the Navy.
If you don't think it has any influence or following outside of Nova Scotia, think again. I live near Montreal and one of the regions American PBS Station, which can be seen in the whole Montreal region and eastern ontario by about five and a half million Canadians and another two million US citizens just LOVES the Nova Scotia Tatoo and shows it regularly during their membership drives. They constantly assert their hopes that filmed versions of it will continue to be made available to them so they can show new ones. Five and a half million potential Canadian viewers. PAO's can't buy that much publicity.
And wasn't the Run introduced as a replacement for the Gun Run? Again I agree with Pusser: The Gun Run was part of the Navy's soul. Were there injuries? I don't doubt it, but could many of those have been prevented with a combination of better physical shape and, more importantly, greater familiarity with the guns and their carriages? We used to be introduced to them in basic.
Here, I am going to rejoin with Jollyjacktar. As an O.S., I did my GMT (today one would say BMQ) at a base that used to be naval, under the guidance of naval C&PO's (Do I have to say where? OK: Cornwallis). No FORCE or Warrior course there. We got in shape by running everywhere on the base as a division, there was morning run and it got us to the water where we pulled the old wood cutters (eleven per Coxn included), then PT on the parade square where we got our muscle exercising as a team with the old telephone poles, etc. [including the old Jackstay "pull" - a jackstay was set up, hauled taut and tied to a stationary post to stay that way with a 200 pound weight hanging from the hook at the midway point and two team on the Inhaul/Outhaul had to fight each others to bring the weight to their "ship" without getting out of their box] But after the fourth week, we were introduced to all the drill with the naval gun.
I am certainly one who advocates that basic should go back to being under elemental control, so that sailors can do naval stuff from the start, Army doing Army stuff and Air Force doing, well whatever it is they do

.
Meanwhile, Long live the Royal Nova Scotia Tattoo.