In general, it's 3 for me.
Some games need a little more of security, there's a lot of people using illegal programs in games like Grand Fantasia, GunZ, Special Force, etc (tbh, I don't know how's the situation in another games).
NOTE: One of my suggestions is, when doing a new account, email should be confirmed to prevent the easy account's registration.
Many people created accounts like GMTrololol or GSHeyhowyoudoing or guhyuhayh something like that - for the lolz or to announce a illegal website for example.
We need more GMs, because GS can't do more than just reporting, I had that experience.
And people underestimate 70% of them because of that.
More forum monitoring (and I'm saying that because, for instance, in PT forums there's a lot of people posting random topics in the wrong place, or posting just for the lolz and causing spam... and has causing a lot of troubles).
I noticed that bugs/errors is what bothers everyone, and we could pay more attention to that. I do actually report a bug or a error as soon as I encounter.
About events, it's ok, sometimes there's a lot of problems in sending rewards but we can fix that, we hope.
Omg... there's so many things that I could just talk about, but I don't know if I'm wrong... and If I am please correct me (:
Trying to suggest some of my ideas and share my feelings with everyone.
The only thing that we can't change is human's behavior :\
You can kiss the ring, but you'll never touch the crown