Answers to your questions:
No. 1: 3.0RC1 is expected on Monday, but blocking subdomain may not able to make it, it is a bigger change. Maybe in RC2 release.
No. 2: Fixed.
No. 3: It should work, I will check, fix should be 3.0RC1.
No. 4: Maybe in RC2 release if cannot make into RC1
No. 5: No plan for this yet. the status of LiteSpeed is completely different.
No. 6: Try to make it into 3.0RC1