Well, I think I've expressed my dislike of the new Off Element rule for the Final Battle in chat enough. So I'll bring the discussion over here, where it belongs. I find that limiting the Off Element usage during this portion of the Trials is a great idea, but I think this rule just goes a little too far.
As Marisa said in chat, she cannot use any Fun decks at all, rather she will be forced to use Optimal decks. I personally had all sorts of plans that were shot out of the water by this new rule. In essence, I feel that the new rule is LIMITING creativity, rather than promoting it by being overly restrictive. Forcing players to use different elements should promote creativity, but when you can use each off element only once, it forces optimality and makes the event much more stressful to all involved.
I would like to suggest the following rework of the rule for consideration in future trials:
"You may not use an off-element card more than once. You may not use an off-element more than twice. If you use Lightning and Quintessence in your first deck, you may not use them again throughout the remainder of the Phase. You can however use any other Aether cards in one more deck. After an off-element has been used in two different decks, you may not use that off-element again throughout the remainder of the Phase. You may use 'other' cards at any time throughout the Phase. You may use any mark at any time throughout the Phase, regardless of how many times you've used it before"
This way, the off-element restriction is still in place, but one can get more creative with their choice of decks. For example, a Fire Finalist could use Flying Fahrenheits in one deck and Unstable Gas in another deck, allowing for a little more creative freedom while still encouraging a wide variety of decks.
I rest my case, ~Napalm. Discuss.