I was thinking about adding new playing field to the game of planeshift. This suggestion is one for the far future and a rather huge change but something that I think would be a very unique attribution to the game.
Right now we have two realms, Yliakum and the Death Realm. I was thinking about another realm, only accessible by powerful magic, which opens up a whole new range of possibilities. Lets call it the Twilight Realm for now (don't feel like thinking up an original name at the moment but feel free to make better suggestions :p). This would be a realm that lies somewhere between Yliakum and the Death Realm .. between life and death. It's a world of energy which the practiced mage's mind can enter. Only those with enough skill can go there after performing an elaborate ritual.
This plane could look like the normal world but with different colors and have a bit less solid shape. I'm thinking something along the line of giving everything a sort of shiny aura and/or some fisheye vision when you're in this plane. You can also see the people who are still in the normal planes but then as shadows and you normally wouldn't be visible to them nor able to communicate with them. Physical damage would be unknown here and weapons don't serve any purpose. In fact you wouldn't be able to equip any physical object. Instead only magic can be used here, be it at a much greater effect and maybe even with completely different results. Physical health would also be replaced with mana and mental skills determine your abilities in this realm. There would be NPC's unique to this realm, the peaceful and harmful kind. Some creatures could even be present in both realms at the same time, they can see and attack players in Yliakum as well as this Twilight Realm. Another thing about this place would be that you could travel a whole lot faster, perhaps even fly around freely. Of course your body wouldn't be moving, only your mind would so while you can explore this realm quickly or move somewhere to meet up with others, you can't move your character's body and inventory. When you leave the realm you'd be back at the same place than where you started out. It could be possible for highly, highly skilled mages to completely move to this realm. This could be used as a way to teleport from one place to another in Yliakum, more or less .. or even to move from Yliakum to the Death Realm without really dying.
A new realm like this can also bring a whole new set of skills with it. Like the ability to see those in the twilight realm and communicate with them without actually entering the realm itself. Of course a skill that determines how easily you can enter the realm, at a low skill you'd need to perform extensive rituals with many rare magical attributes while at higher levels you could more easily access this place. At very high levels it could even be possible to move someone else there as well, maybe even against their will so that a mage can kill off a great warrior by moving the warrior to the Twilight Realm. There could be skills that allow you to move around faster in there. A skill that lets you change shape in this realm or summon non-physical weapons and attributes. And so on ...
You can really go anywhere with this but I think that's enough for now ... in short, I'd like to see a magical realm where other rules apply and only the mind matters.