The intent with Asterix was a single 5 years contract, at which point the RCN was supposed to have received delivery of PROTECTEUR. Now they have had to pile on another 5 year term. But I'm pretty sure that will be the last one. After that, I don't see the RCN wanting to keep her - but if the RCN makes too much noise about getting a third PRO class vessel, I can see the politicians foisting Asterix on the RCN. Better for the RCN to wait until PRESERVER is built and the government has divested itself of Asterix - which has then been pawned off to someone South of Mexico by Davie - to start asking for a third one, to be built after the heavy icebreaker.
As for civilian crewing, with the PRO class, that ship has sailed: the self defense systems, sensors and combat systems are military grade and will not be put in the hands of a civilian agency, even if it was the RCNAVs.