Not gonna happen. So, let's say Nokia release a MeeGo device and you buy a LG phone, but don't like the UI, so you take the Nokia UI and put it in your LG phone? I don't think it is going to be fair for the vendor; because it's the precise the UI where they invest cash and want to be different. It may be possible (like the HTC Sense UI being ported to other Android devices); but I don't think it will be supported. What should happen is that you could replace without major problems, the vendor UI for the generic UI we have just seen.