Every way in the game isn't going to give the same amount as something else. The events I agree on and those can be raised. Achievements, however, are just bonuses and aren't suppose to give you 100 Zone Coins for completing them. These additions to the server give reason for doing actually using previous content in the game that had no purpose before. That is the main reason they were added in the first place. Missions for example there was no reason to do them at all beside to get to level 3 for ship repairs. Achievements give reason to try different things on the server to get a small bonus or prize. These aren't things that are suppose to be game changers they are just things to revive current content on the server while other things get worked on.
As for the "#Zera" I really don't care what you all think about that anymore. So complain all you want there is no point.
If you don't like what is added don't use it or don't play at all. There are other servers available to you and graal will take your money just the same. If adding things for you to do is a problem them you aren't worth trying to please.