It is such a complete breath of fresh air. I can come up with a fair amount of suggestions to make the existing functionality a little bit better in some areas, but I could never have created/thought of the existing functionality in the first place and the underlying fundamentals/vision myself like this. 95% of what has been shown to us in this alpha release is just... perfect and soooo well thought out from the enduser perspective. I am really impressed. And to prove to yourself how good and refreshingly innovative this UI is, just take a look now at the current biggest 'competitors' (vB, IPB) out there... I mean... the difference is suddenly sooo huge! I always found vB4's UI/UX very bad on many levels, but since XenForo saw the light... it appears to be even worse then I thought it was... (and I mean this).