Also, there's a good probability that we won't get any info to answer any of the very valid questions, and instead they'll just drop the new raid on us without a word (other than perhaps a detailed mechanics overview). That's how the Krayt went, we didn't get anything definitive about the reward/scoring structure until it was live. So my best recommendation to everyone, would be to just follow your own path.
Personally, I decided not to drop what I was doing and chase Krayt, and I feel vindicated now in that decision. I *think* I'm actually better positioned to do well in the upcoming raid, based on the character list they've released, and it's exactly because I've followed my own path of what I want to do, which has mostly been focused on GAC performance. So when a raid comes up that suits my roster, great. If it doesn't, I'm not chasing it. Currently, my focus is Leviathan, and I'll just get my R8/9 mats with crystals from FA and GAC, thank you very much. I think it'll be much less stress and more enjoyable to take this kind of approach, rather than fixating on raid cadence and chasing after whatever the latest thing is CG wants us to spend on. Thankfully in my guild, we also don't force anyone to adhere to any particular farming path.
The main catch rub here is that the R8/9 mats are gated behind raid performance, which is now a constantly shifting target. I'm fine with taking a slower, "around the way" approach.