I think I have most of the ones for OpenMW since that's the community I'm most part of, but I'm sure I'm forgetting many. I'd rather have more features now and have to pare some down than forget any important ones. What I especially need help with is more features to list. My goal is for this to be a tool to educate people on the many features and current progress of OpenMW, while also allowing them to decide which of the 'Morrowind systems' (for lack of a better term) is best for them. Maybe a version of this could go in the FAQs or Wiki for public reference, but it's far from publishable and I'd like to see what people think. I happen to be very excited about both OpenMW and Skywind, albeit for very different reasons.
Now I know we all care very deeply about OpenMW, but I am trying to at least be fair towards the others. As progress continues to be made on the different major projects involving playing updated versions of Morrowind (MGSO, Skywind, and OpenMW), I thought I'd put together some kind of comparison chart for the features and benefits of each.