Concerning the question 6 which is :
If there are any limitations on protocol changing proposals, then what will those limitations be?
I think what was meant is something like :
Assuming masternodes owners can vote (must vote ?) on important proposals as modifications of BOSnet protocol, what are the limitations on such modifications ? Or said even simpler, how deeply the BOSnet protocol can be modified in the future by public vote ?
I would like to see this question answered. I wish I was the author actually.