Honestly I think my biggest annoyance is the lack of actual effort that comes from our version's dev team. To clarify I mean the one's who are actually implementing changes, not just forum and community admins, of which there are quite a few who go above and beyond.
Rather it is just disappointing that the only "version exclusive" updates we tend to get are just super early ninja releases. Everything else is just half translated cut and paste coding...I get that there are probably things out of their control but I would love to see some actual effort put into a few things that they presumably can monitor. Such as making at least one or two of the cross server events power based rather than the lazy lumped server opening brackets they have now. For example, the very first sage world that opened up for our server had level 90+ players with over 200k power in them. There was no power or level barrier to even attempt to allow competition. It was just a slaughter, plain and simple.
Now instead of just using, say, a 200 server range to set up cross server events like these, why not just make them like DB and go across all servers but have power brackets set up? You could still fill battlefields but also give many more players an enjoyable experience. Another example would be with DB, easy freaking change, make it somewhat like Matsuri. You just got stomped by a team you had no hope to even scratch? It *s but at least next fight we can lower the level/power range and give you a fighting chance.
Furthermore, if they're really concerned that the massive spenders are going to quit over a few events being tuned to not allow them to curb stomp weaker players at EVERY juncture then they're just wrong. Sure they probably like to have those moments here and there so you can give them those moments. Make one day of sage/matsuri the current and then give the other 1-2 days the updated model. If you change DB to have said feature sure, they COULD have longer matchmaking but more than likely you would have volumes more participants so in reality matches come and go even faster. Like there are legit so many ways to make minute changes that would not only keep current players happy and engaged but also make it so new players don't drop within 2 weeks after launch.

P.S
Before people get all whiny that I am being too one sided, I am not F2P by far. I'm probably nearly $3,000 in before first 2 months have even passed. It's just that I'm not some *bag who thinks because I have less financial responsibility at the time I am above other human beings. A game should be enjoyable on a wide scale. Spenders will always have an advantage but it doesn't mean you limit 90% of the games features to us. I would love to be part of a more lively server where people actually get on, chat and enjoy the game together. The game is already time consuming enough if you try and make all the events and daily quotas but at least with other people to chat with it feels less so.