Do you like a custom GUI or the original endless online client?
Custom GUI as long as it looks professional and seamless.
-Do you like lost of quests, or a story line with side quests, or both?(A story line, but with multiply/lots of different quests)
Main story line with the occasional side quests.
-Custom maps, or regular endless online maps, or a edited version of endless online maps?
I prefer custom maps to bring a new look, I played EO years and don't want to see the same boring graphics
-A endless online based(Keep all the items/npcs/map tiles) or brand new stuff?(Brand new items/npcs/map tiles)
New is better, otherwise people would just play main server or create their own.
Server
-Pk server(Deadly were you drop all your items when you die)
Definitely not. Players work hard for items and losing them all might make them quit the server.
-Adventure server(Where you have to explore the maps(World) to find stuff, finish quests, and train your character up)
See below
-Both? Have a bit of both, where there is certain maps with player kill on it, and when you die you lose all your items in your inventory?(Not bank)
I wouldn't say both adventure and deadly but adventure and PK on only certain maps would be nice. Perhaps put PK only on certain maps where rare items are? And then have a generalized PK map like a coliseum.
Events
-What custom events do you want to play/be apart of?
Devils Gate is always a hit.
Auctions.
Mass random monster spawns across the main town.
Themed events: Halloween, Thanksgiving, etc
Hope my input helps.