oldschool has its own slightly more balanced variations of chaotics already in the game, elder maul/acb/kodai or tsotd and arclight all take the place of the respective chaotics, rapier is the only one that doesn't really have an oldschool counterpart currently.
castlewars was quite unpopular in many versions of the game, particularly when it lacked good rewards, don't see any reason to force people to play it just to get items.
zombies was popular, I'd like to see some sort of wave defence based game replace the current pest control, in fact it'd even work quite well on the pest control map and maybe even with the npcs.
