I also feel like the "weaker" expression will also allow for a less prominent Aleutian low displaced further to the west during those periods of dateline forcing, as opposed to a season like 1998, that has the other worldly low tucked against the coast and overwhelming the colder MJO phases with that transcendent PAC jet. This is the benefit of having the Walker cell displaced to the west....we have seen the negative of it in Maritime forcing and we will see the benefit later this season.
Stronger, Canonical el Nino Hadley Cell Configuration
The Modoki el Nino, on the other hand, has a diametrically opposed circulation pattern that weakens said subtropical Pacific jet, which in turn diminishes the Atlantic jet and fosters the development of a cyclonic circulation that sustains negative NAO episodes via said wind-evaporation-SST feedback. This often works in conjunction with western ridging due to the position of the Hadley Cell over the central Pacific.
Weak el Nino/Modoki Hadley Cell Configuration