Heyas I am NickyB and I am currently playing around working on some stuff for a graphical mud / SMORPG I am working on with Unity3D.
I am starting to work on some of the design and mechanics for the game and looking at creating something that is mostly diceless that will work well. I intend to start small with it, a few weapons, armors, items, and spells and to add from it as I get both more comfortable with the game engine and comfortable with the ruleset I am using.
So I am looking for advice from those of you that have been here a while on something that might help be a framework and or guide to creating what I am looking for.
The most important part is that I am trying for simple rules and gameplay at least for the introduction to it. Possibly getting further complex as time goes on.

Ideas
Check out my blogs on the Nevercast engine. The core of the system is diceless, and may give you some insight on how to pull it off without sacrificing realism or complexity. My game on hold, Dramo Worlmoro, is also diceless, but minimalist and based more on the sake of fun and player collaboration, and I have the rough draft design sheet in word format on my profile.