there's also the fact that after the introduction of multiple summons, GNW changed radically.

One well fed level 95 summon can wipe out 3 teams of 100ks before getting brought down, so it's useless to put them first now for that reason (even if the enemy doesn't run edo hiruzen or agk teams).

In the past used to be a good strategy to stack 1 field with 9 people (with the strongest 3 as the last ones) because the hope was the enemy was not able to get back to full hp when the 3 strongest people came in play.