No, you said they were getting shafted due to the points value, indicating improve the points value and it would be ok. Lets remove 18 and use 2 picks in the mid 20's. Better points value, does that make it better for North? In your view of using the points value index then I guess yes, but for me (and the list managers) then I doubt it, as those picks would probably be AFTER the players that North are after, so who cares what the points value is, they simply don't care.
They will compare offers for 2, based on the player they want 1st (if thats Tauru) and what extra they might get out of it, and weigh that up against the risk of someone taking Tauru between 2 and 6. There is nothing else for them to consider other than do they think the upside of the extra pick is worth the risk they take on that the player they want (assume Tauru) is taken before their pick. I'd hazard a guess that they don't even take a glance at the points value index, they already know what they want from any deal to compensate for the extra risk they take on, rather than just taking Tauru at 2.