Very interesting discussion! Regarding the Poser UI: There are two very different aspects of a good UI, that are unfortunately sometimes at odd. The first is the ease of getting something done in a program for inexperienced users. Poser does an moderately good job of that, which is better than most 3d programs I have ever used. Note that this is not the same as easy to learn, because it dos not guide the user to a deeper understanding. The second is the ability for a experienced user to set up a effective workflow. This is the part that the current Poser UI is really bad for, for many reasons small and big. For me the second aspect is much more important, because one is a experienced user for a longer time than an novice. Regarding a rewrite of the core functionality: Rewriting the core engine will definitively break some of the existing content, because much content is build around poser quirks. But I would really prefer CL would disregard compatibility and give us a tool that makes creation of new content easier, more powerful and more logical. But that is not likely to happen, because I think many other users would hate it. It is just that I like creating my own stuff more than using the stuff of others (but that is great too).