Dungeon Twink

Me and several friends have decided to twink at level 60/70/80/85 (for any expansion) and do classic dungeons/raids, but apparently most of them are closed (most importantly the dungeons), and a suggestion is to open the dungeons for anyone willing to twink or even transmog. Transmog is an action performed by many people who had certain items used before, but without dungeons open they can only dream, which is disappointing. I just keep on hoping that they will be open. Thanks to anyone who considers my suggestion.