Gigantor The Goalie
Speak for the Goalies
Could it be that adding players on a compressed schedule (which somehow seems long & drawn out from where the fans sit) while dealing with visa issues is dictating the free agent signing patterns? Plus there's the matter of this process (among many others) being new to the GMs & team/league staffs. The learning curve is mighty steep.
I think there's a few factors at play. The first being this is free agency so players decide where they want to play and naturally they want to play in their established homes. They didn't grow with the league like a NHL player but are instead already established. The Ontario players want to play in Ontario, the Quebec players in Quebec, etc, etc.
Second factor is national team players are safe free agents. The ones picked have proven themselves on the international stage to be good to great players. Unfortunately there's only so many spots on national teams especially top 6/top 4 spots so only so many proven national team players are available. Like you said with a lack of staff might as well just take the players everyone knows are good. Every PWHL team just essentially made the safest, most neutral opening chess move. They were more worried about starting behind than getting ahead of the competition.
Third factor: National team players have marketability. Hilary Knight is a 34yo winger who is starting to show her age. She got signed to a 3-year deal because her name is Hilary Knight. Sarah Nurse is probably the most marketable national team player out there. Doesn't shy away from the spotlight while also being great on the ice. She's a winger though and it's not like she's the best winger or close to it in women's hockey history.
Fourth factor: These are still hockey GM's and they come with the same old school/conservative outlooks any other GM does. Sauvageau has been in the game since the early 2000's. Kingsbury is naturally going to lean towards the players she's been picking as Team Canada GM for the last half decade. She already got her coach back in Troy Ryan. All of these GM's are people who have been in hockey for a long time and it shows.
Personally I don't think visa's are an issue. This is being run by the group that owns the LA Dodgers and the league doesn't start training camps till November/December. To be fair I don't think there's any international free agent talent available that would have been good enough for one of these first three contracts anyways so they all get a pass there.