Your change of Subject here is only visible in your post, not in the topic listing of Meta.
P.S. Had to edit the Subject when I quoted you, because my quote reply inherited your change of Subject and I overlooked it first.
I don't like your proposal, as I sometimes "fix" the Subject deliberately when the OP has chosen a really bad Subject or I want to add an additional emphasis. I rarely do this, though.
The idiot who applied to a lot of signature campaigns by trying to fake them as [OPEN] is just plain stupid and earned his spot on every campaign manager's blacklist.
Frankly, I don't really see a point to disallow a change of the Subject by any poster when this change is limited to the user's own post, unless he's quoted and the quoter keeps the change. This doesn't update the Subject of the topic in the topics listing, this can only do the OP or moderators/admins.
Bro, I know that this doesn't change the title of the thread as a whole, and my suggestion wasn't about that. I suggested that no user other than the OP should be allowed to make any changes in the subject, even in their own post, because they are posting in someone else's thread, and they shouldn't have the right to make that change. The area that says "Re: Little things that bug you/me about the forum" is to show us the title of the thread we are in, and the thread is created by someone, so why should I be allowed to choose a different subject line for the same thread only in my post when that area is specifically to show the title and has nothing to do with my post at all since my post is
showshown in the body?
You, or anyone, might not like it, but I don't think it should be allowed. If you are posting in a thread, you should only be allowed to post, you shouldn't be allowed to make your post have a different subject than the one OP has chosen. If someone doesn't like a title, they can write about it in their post and ask the OP to change it.