I am a member of several SE sites, mainly the programming and english sites. I have already accumulated enough rep to have basic privilege to post comments to questions and answers, vote, answer my own question, etc...
Is it necessary to have to climb up the rights ladder when many privileges have already been given to you in another SE Site?
For example, yesterday I asked a question on the Music.SE, then inadvertently found the answer to my question soon after. It happens. But I was unable to provide an answer to my question immediately, having to wait because I didn't have enough rep. Now at this moment in time the Music.SE site isn't a site I can add much expertise to, or have many questions for but sometimes I come across a question where I can add an extra two cents to help out but really should be comments rather than answers. Other times I find that I have a comment of value to add, but since I don't have the rep I don't bother and thus perhaps users lose potential helpful comments.
I wonder if it is necessary to have to climb up the ladder of the basic rights every time one joins a new SE site if you already have a bit of rep in other SE sites?
The question has been answered, get 200 rep in a SE site and the doors will open. Thank you.