I find the site very 'engaging'. The interplay of answers and comments (not to mention meta comments) is fascinating.
I'm trying my best to participate in a responsible manner. I realize that I'm not going to get many points until I've learned my way around better.
With that in mind, I'm finding it difficult to be responsible when I'm told my tags are inappropriate. (I just posted a question regarding 'tonal center' and 'guide tone'. The only tag I could use ended up being 'tone')
Why don't you permit all questioners to tag questions as they see fit and allow the moderator and other more advanced users to modify tags [possibly even employing the comment system!]?