So I've finally managed to start doing the Blastoff quest-line, only to be stopped by the quest that requires a Buildcraft refinery. From what NEI is telling me there is no recipe (I tried the default recipe from the buildcraft wiki and that didn't work either).
I've also noticed that blaze masters still have ~750 health even though it said in the change-log that it had been lowered to 150-200, the same thing applies to Enderman slave health.
Speaking of Enderman slaves, they're just OP as hell. I did some testing and found that even if you're wearing full titanium armour(27 armour points), enchanted with protection 4, and have resistance 2 active you still die in about 2-4 hits.