"And a whole heap of BC voters care about the 'liberal' misnomer. If you lived here, you'd know that."

Ha.   A whole heap of NDP voters, maybe (and even so, I doubt it).  16 years of Liberal rule proves a majority of BC voters had no such qualms at all.

The Socreds were the party of the right in BC, and Alberta for that matter.  When the brand eventually became a liability, the right morphed into the Liberals in BC and the Conservatives in Alberta, and have done pretty well for the most part since then.   

You want the provincial Liberals to change their name?  Join the party and start lobbying.  After all, you live there.