Never been quite sure why (even if the thirteen municipalities remain unchanged) there aren't more things handled by the Regional District, including things as disparate as policing and arts venues, which City of Vic currently wholly or primarily funds but which are dealing with whole-region needs. City of Vic proper is the work and entertainment centre of gravity for the entire region, plus (along with suburban Saanich, which you can't really tell from Victoria...), and carries an outsized share of the expenses.
Feels like, as a rule of thumb, if you can't tell where one ends and the other begins on a satellite photo, there's probably no reason for multiple municipal governments. (see also: Duncan and the residential part of North Cowichan, and no doubt dozens of other similarly small examples).