As for IPS4 - it's a brave attempt to do something different, and that may be so in the core, but the front end is a mess. XF rules!
Very few add-ons do that and those that do must comply with the terms here: https://xenforo.com/community/help/resource-guidelines/Some (many) of the add-ons make call back to the server, collect user data without the customer knowing about it. I hope this scam ends soon, especially removing the "branding" part.
I'm not saying this is or isn't the case here, but a major version change is not linked with new features.I'm sure that the team are working to include a lot of features and feature requests into the next version
A CMS system based around pages with full editor functionality and the ability to comment and rate (also to have a variety of stock page layouts and the ability to create your own)
A customisable sidebar (that can either be fixed or floats as the page is scrolled) with an easy way to order blocks)
Yeah, the most popular demand by the users on my XenForo sites, they don't want responsive, they want apps!Crazy idea here, but how about build some dedicated android/iphone apps around xenforo 2.0 then sell me the complete package