Khaled does read all of the Bug Report and Feature Suggestion posts, but normally only replies to items in the Bug Reports section. As to a Yes or No, only Khaled has the authority to say that, and he does have a list of items that he plans to incorporate in future versions, but sometimes it takes a few versions to come out before a feature is introduced. Also note that there has only been one release of mIRC since your original post.
I don't think Khaled has ever said that a particular suggestion will never be implemented, although some of the suggestions have been made so many times and over so many releases (eg: emoticons) that, realistically, they probably won't be incorporated.
