I like the word "partisanshipanisation" - well coined!

Bear in mind that in most constituencies AV wouldn't work down to the final preferences, so which candidates you don't vote for won't make much difference.

We've always had a mechanism in the UK for registering a vote for no candidate. If you 'spoil' your ballot paper (i.e. don't make a valid vote), these are counted and listed separately in the results.