Here are my ideas, some have probably been said:
Towns: As Kenovo said we should separate zone into different towns or zones (woop). I've always wanted the zone map to also have different names for their areas. Like on iClassic we have Swamptown, Snowtown etc.
Tileset: Like everyone is saying, the tileset doesn't look too good. There was a tileset being made (A much better looking version of the current tileset made by Shane) but that seems to have been abandoned or something. Someone who has a similar graphics style to Shane should pick up from where he left off and complete it.
HUD: In my opinion the HUD looks yuck/old, and makes zone seem like some cheap MMO. If someone were to edit/remake the HUD I think it would look a lot more appealing to the players. When I'm talking about HUD, I mean the Menu, Profile, Chat buttons and hot keys.
Staff: This isn't about staff doing a poor job, their doing just fine. But about 95% of Zone staff are from the US and that means there is always a blank spot where no staff are on (during night time in Australia). We need more Asian/Australian staff to fill in that gap as me and Platinum are the only Australian staff currently working on zone.
Shops: All shops on zone need to be different, not just all named 'Style Co.' or 'Hatz'. Renaming those unnamed stores will give them character and make people remember them.
I'll post more if I can think of any