I haven't get a chance to try XI after update(rarely have time to play with FFXI nowadays in general), but I think this new XI update shares the same concept as 10 min No.XI duration last year, but gives you more freedom to decide what to do.
Say for example if you're in a pt of 3 crit-hit melees: THF, NIN and CDC PLD, one COR and one mage. And you're doing Chaos+Rogues for melee, evokers for mage, and regain+wizards for COR yourself in this order: Evokers->Chaos->Rogues->regain->wizards.
With 10min duration, if you rolled a No.11 on Evokers, you gonna stuck with it for 5 min+, which is completely useless if you're DDing, plus if you use uggly pendant you need to get rid of MP every once a while. Now you can either choose to have regain or wizards up, you can't have both.
Assuming no PR recast merit nor augment on ASA pants, and no winning streak merit nor AF3+2 hands, so roll last for 5 min:
0:00 No.11 Evokers--->1:00 Chaos---->2:00 Rogues---->3:00 regain
You get 1 DD buff on you and it lasts for about 3 min.
Now with this new update:
0:00 No.11 Evokers---> chaos(walk away from the pt member and bust it to cancel chaos)----> 0:30 Rogues(walk away from pt member and bust again)--->1:00 regain----->1:30 wizards
Now not just you get 2 right buffs on you, but they last 4 min with shorter PR recast time. COR actually ended up having DD buff longer.
Now what if you get No.11 on rolls that benefits you?
0:00 No.11 wizards----> 1:00 evokers--->2:00 chaos--->3:00 rogues---->4:00 regain
You have 1 roll on you for 5 min+, another roll is useless roll for 3 min until you cycle them back.
0:00 No.11 wizards---->evokers(bust and cancel)---->0:30 chaos(bust and cancel)---->1:00 rogues(bust and cancel)--->1:30 regain
You have 1 roll on you for 5 min, but useless second roll was only on you for 1:30, so COR still gets DD buff longer.
Note that you don't have to cycle through the useless rolls as fast as possible, depending on situation, you can just reroll same roll over and over again to aim for better buffs. However, compare with last No.11 update, this new update gives way more control and freedom to make your own decision, you can either cycle through quickly and keep the buffs you want on you, or aim for better number for other pt member by redoing rolls over and over again, unlike previous No.11 update doesn't give you any freedom at all. IMO it's a pretty brilliant design and much better than previous No.11 update. Way to go SE!
Edited, Jul 13th 2011 1:38am by Afania
Edited, Jul 13th 2011 2:09am by Afania
Edited, Jul 13th 2011 2:16am by Afania