How will we fare in Blackwing Lair?

I'm not sure how the world would categorise my guild - perhaps semi-casual? We raid one or two nights a week with a fairly stable core of raiders and a rotating cast of the rest - perhaps those who cannot or don't want to raid every week, experienced raiders on alts and relatively newer raiders. We're slowly improving our performance on a good base: for the last two weeks we've cleared Molten Core in under two hours and for the last three have killed Ragnaros before he submerged.

Last night there was discussion on Discord of how we'll do when Blackwing Lair is released. The tone was fairly confident, perhaps overly so.

I'm really looking forward to being in on some guild first kills, and happy to work through the wipes that will inevitably be part of some of them. It will interesting to see how things pan out - I hope that the "new" raid gives us a good level of challenge.