These are just some in-game suggestions I would suggest...
-Basic commands (@go [town], @cody (all-in-one-npc) @shop (main shop) etc)
-Higher starter package mesos and more items (such as pots). (So that new players can get their stuff faster)
-Vote System to get NX (and to increase the server's popularity)
-Maybe Mu Lung Dojo?
-Jump Quest prizes
-Zakum / Scarlion / Targa warper (bossing for their hats)
Hopefully these will get added!
PS: (For moderators/administrators)
Here's a simple thing to do with suggestions, when you reply just do: (look at example below)
-Declined
-Will discuss
-Absolutely
-Maybe, will discuss
-BOOM HEAD SHOT DENIED
Makes it easier instead of writing down a reason. (Unless you need to write down a reason)