Vbulletin has ceased to listen to their customer's wish list and they create their software as they like. If you have a wish list, they tell you to ask to hire a freelancer to code it when it should be in the main software so it appeals to customers. The main idea behind forums, is social network. If you create the needed and advance tools, it will become better and better. I really believe if Xenforo listens and not ignoring these ideas, you will be ahead in the competition.
I'd really like to see Xenforo renovate the Inbox system and to be more styled and work like FB. Freelancer.com attempted to create one like FB but it wasn't as smooth as FB. But you see how when you scroll up and down on messages, things look, how pagination looks and auto load with scroll works. Things like that.
Creating Clubs/Social Groups.
I don't think there is a system yet for this on Xenforo but I'd like to see when it happens to have a lot more customization yet look simple. Vbulletin social groups looks really ugly. A creative social group which looks simple yet with good customization like cover image, avatar etc.. is Google+ Group.
Example (don't have a background image though, though you can implement its feature like the G+ profile or FB profile)
The current profile look, is nice but it looks like any other forum software, even similar to VBulletin. This is something new and I'd like to see it implanted, Avatar or profile picture over a background image. And start to create nice interface for when uploading a background image, you can reposition the image and you can crop the pic and pick a specific size.
On my private beta profile, I've did it and it looks great. I am sure it should also be easy for Xenforo to do it.
Example: (as you can see the style is really nice) I've always wondered why can't forum software come up with a default look that looks professional, innovative, and simple, not general!
Profile Albums are missing. I'd like to see the albums integrated with a new interface, something similar to G+ or the new Myspace and how you can comment on each photo on the right side.
I'd like to see Xenforo implement the new CKEditor 4.x. Vb 5.0 has implemented and it looks nice and works nice.
Profile Settings Redesign
Redesign the privacy pages, settings etc.. ex
It is getting old the way the design works where you have to check or uncheck mark. Why not implement a yes/no setting
A better interface, we are in 2013 now, things should advance!
Things that are missing on Xenforo is a detailed Admin interface like User Rank, User Groups to work like vb or similar, several features are missing.
If these ideas are implements and implemented right with a good design, I have no doubt that Xenforo would be ahead as a forum software. Because neither Vbulletin, or IPB attempted this.
Please don't follow the cycle of new versions like Vbulletin, like when they finished version 3.x, they started version 4.x and it was the same ideas, nothing really major and then again, version 5.x is the same as 4.x but even worst. Each version should advances with new features and not attempt to redesign the entire features with minor editions and call it a new version. I never liked this when VB did that.
Now you have an idea of what I looking for in a forum software