I fully agree with you that it is nice to have a confident, capable and sometimes ruthless MC for once instead of all the highschool sissy bois.
However, within certain contexts, I do think it's interesting to have the MC take a bit less domineering role in the bedroom. With Zahra, he has nothing left to prove. With the Queen, well, she is factually more powerful, so...
Not sure what you mean with the collar thing. If you are talking about Ain, I also don't that, and I think Zaton also dislikes it.