In terms of club call as a tactical option, I think Wire have done the right thing.
Huddersfield if you take the league table are the clear leaders in the competition. You can start using theories and things like playoff experience and game intensity, but anyone who has seen moneyball will tell you that it's mainly just people guessing. The only thing that does matter is the raw data. This year the Raw data suggests Huddersfield are the favourites to win as they have been the most consistent side in intense games and easy games over the season.
Given that information, the question is what do you do with it?
For me if you are a side that thinks they can win the competition you want to make the final more in your favour.
If you are a team that is not confident of winning then you want the easiest route to the final.
The easiest route to the final given the choice of the 2 teams is Leeds, they are carrying injuries and have just had a humdinger of a game.
However if you want to make the final easier to win, you let Leeds go and take Huddersfield on home turf, were 90% of the crowd will be backing you and giving the ref greif and applying pressure to the away side.
Ref's may try to be neutral, but come on home advantage does have an impact on the odd call. Even if it's just persuading them to make the right call on a forward, rather than letting it go.
Take your biggest threat on home turf, rather than in a final where it's pretty even.
I think Saints made this mistake a few years back when we had club call. We took Huddersfield as it was clearly the easier route to the final. But for me we should have took Wigan. In the final Wigan won the game in minutes on a wide open pitch with our players flagging we did not stand a chance. Had we taken them at home, the very last game at KR, with fans pressurising the ref and players on a narrower pitch it would not have been so easy for them.
For me the question is about the team picking, is making the final the achivement or do you want to win the thing.