Yup! There are some things already done. Others, we can find a way around with the scripting system, but that one's somewhat limited. But with creativity and knowledge, we can do many things.
I first need you to have in mind one thing: this game can be absurd at times. We can have one place that looks medieval, and others that look modern, and things like that. That is why I call it RMRK Universe, and not RMRK Kingdom or something like that. The concept of Universe allows for more variety and expansion, etc. You get the idea. So almost everything that comes to our minds for quests, items, NPC's and places could be possible. For example, I want to make some series of collectible items. Those are items that you get just for fun (gotta see if there's an inventory limit, though we have banks, too), but that maybe, when you complete the collection, a title could be granted.
Another feature comes in, then: titles or ranks. These are achieved in many different ways. You start with a basic title and later on you can have a new one. And that title can describe the type of player you are, for example. It can also grant you access to areas, quests, and even items. This should be possible.
Quests. Those are a must. Don't you love questing? I do! LOL. We can have a quest where you fight someone like... um... Fadark-something? Well, whoever. We can do about anything that crosses our minds in the Universe of RMRK!
Areas. All sorts of areas possible! To towns, to forests, to caves, to parallel dimensions, time traveling... Anything that we can do as long as we have the right graphics.
NPC's. Those that gives quests, those that are just for decoration, those that have interesting things to say, those that represent someone we are familiar with, etc.
Special Events and Holidays. Those are a must, in my opinion! They add a great feeling. Makes players feel that the world is actually alive and that things keep happening. Static worlds are booooring.
Basically, I want this game to be simple, yet fun and never boring. That players can do more than just fight monsters and level up. That they can hang out, hunt for items, beat dungeons, complete quests, explore areas, solve mysteries, participate in events, etc.
Scheduled updates/expansions. Because we can't just throw an update every time we feel like it. Remember that there is no auto-updater yet. Maybe in the future there will be one. So every time the players need to update, they'll have to download a package and unzip it. Some files might be removed from the game when they are no longer necessary, so we also need to organize how we add content to the game so that there won't be any problems. That's the only downside of these engines and not being able to program ourselves. If we had an auto-patcher, things would be much easier. We must announce updates and expansions with time, in order to prepare players. We also need to decide how often we'll update, and what will be added with every update. Yes, there are many things that need to be planned carefully. I wanted to add this here.
More? Just post.