2, 4, and 5 will be good.

1 lacks content if you think of it only in the HIVE blockchain, but it has a good impact on bringing someone on board. It benefits more HIVE and Liotes than the YouTube account itself.

2 is unlimited information that may be useful for people.

3 is a risk one to get viewers and haters at the same time.
P.S. Not all people will kindly make a good discussion about that.

4 is a personal thing for me to look out for in the future.

5 is a usual thing that attracts people, depending on the content.

6 is like... need or not needed at the same time? Depends on the content.