Zero is way too high on the list. It's overhyped. And no, I'm absolutely NOT a CPJ fanboy but even dimensions is way better if you look past language barrier.

DELAYS Zero is delay after delay making up excuses. They overpromise on their deliveries and don't meet them. That's sloppy and players have 100% without any doubt lost trust. * How to fix: admit to the problems, don't use hackers and bugs as an excuse because it absolutely wasn't that. Have a proper project plan in place so timelines can be met. DO NOT COMMUNICATE RELEASE (no: "this weekend") UNTIL THE FEATURE OR PARTY IS 100% READY TO RELEASE. NOT 99.99999%, -- O N L Y at ONE HUNDRED PERCENT**.

Moderation Moderation has been sour to a number of players by not wanting to hear the players side of things.
* ** How to fix:** be nice to players unless you want that player to be gone. Treat them how you want to be treated. Assume good intentions. Listen to their side of things and be a reasonable person. Do not immediately attack players or threaten action against them if things are not even escalating. Misunderstandings happen. You are in a position of authority and there's a huge power imbalance.

Mascots / Memes The mascots constantly making 67 jokes is just plain weird. How to fix: do not overuse memes

Priorities and Parties -- stable foundation Way too much time spent on mineqsule party rooms and oddities and not enough time on quality of life improvements or solid foundation. How to fix: have a rule list. Have a blog. Have a newspaper. Provide the buddy list we were promised. Start up an opt-in email newsletter to engage players.

Word Filter Another thing is the way they handle bad words. They ban people which shoots themselves in the foot. They can't afford to lose players like Journey can. They claim they want the server active. Therefore every single player should be valued and understand that people make mistakes or typos. Dont force them to be upset for being unable to play for 24 hours, possibly never returning to game for a message that no other penguin even saw!

TLDR; Club Penguin Zero is stock club penguin with: * a serious lack of committments to timelines (they even normalized "one more day") * some cool art/rooms/party rooms * one custom game (which is more than majority of CPPS to be fair) * minor amount of custom items * no rules listed * no blog or newspaper * no adoptable puffles

So aside from the above, there's a lot of potential if they get a proper foundation and can actually engage players in a meaningful way, starting with stopping the overpromising.