make a new island that can only be reached through the dungeon, or make a "deep dark" part of the dungeon that is *interesting* (not a gigantic maze with nothing in it) and has NEW monsters that will kick your ass if you arent good enough.
also, if you enter you will automatically be put in bmode!! im sick of this ***** ****, pking doesnt even exist anymore.
maybe some decent drops???? new bosses that will destroy you if you dont have at least 3 people (including a healer).
hell it could even be like wow with instances that reset every week (so that bosses/drops cant be farmed like mad). there could be an instance themed for every kingdoms island(<-awesome idea), etc.
basically what im saying is SOME NEW CONTENT? IT DOESNT TAKE THAT MUCH EFFORT. everyones so confused as to why the player count is low, and blames it on the lack of items (which is somewhat true) but its mainly content.. the newest **** you can do is brutal maps, which was probably added 3-4 years ago.
do something like that for ****s sake

. peace