Like I said, ATR crew are very much VARA they are not apart of VA, ATR,F100 and 320 crew do not get to "just bid" on to the VA fleet they have to go through the same external process as the applicants that you mention even then it's not garunteed. The 10% can and is currently being applied ( surely I don't need to explain why VARA put this in the EBA) so if VA wanted they could get anybody off the street to fly 73 domestically as long as there is no suitable candidates bidding from NZ. VA want to use Alliance on another ATR route, but, they need Union approval and because VA are enforsing the 10% it was rejected among a few other reasons.
I'm not sure what clause you're referring regarding negotiation when the ATR goes to the VA AOC it's definitely not in that 2015 EBA.
VANZ is different their EBA has their terms of group transfer etc. As part of the deed tiger, it looks like will be able to just bid with out any psych, sim or interview but they don't get a look in until sometime 2018.