Hackers are players who can't win with pure skill, because they lack skill or because they think hacking is fun. You can't really exterminate hackers completely because it's just not possible. There will always be that one person who wants to cheat their way to the top. However, you, and everyone else who keeps complaining about a lot of hackers, can record and report them. I agree, there are too many hackers roaming the server and it would be nice to have many staff members in game to prevent them as much as possible, but even if there were a lot of staff members to monitor 24/7, there will still be hackers in Assassins, SkyWars, Arcade, and plenty of other games which also require attention, not to forget the never-ending list of reports in the 'Report a player' section of the forums. Add the fact that staff members have lives as well. So in conclusion, there will never be a complete stop to all the hackers, but we work hard on making the server as hacker-clean as possible.
Also, better Anti Cheat plugin is on the works which will help out a lot. However, Developers produce a lot more things than bug fixes, taking up a lot of their time. So be patient.
~Locked