In reply to Richard.

Would you mind elaborating on your issues wit the plugin?

Firstly, my leading and dominant reactions to UserPress are positive. It is interesting & intriguing, to me.

That doesn't mean there won't be concerns, or even negatives. Or, that we should ignore them, if they arise. WordPress itself is showing signs of becoming a hairball.

I honestly don’t understand why people are so confused [that the UserPress plugin includes its own theme].

Because they didn't expect a plugin to be a theme? They've never before seen a plugin install its own theme? Then override the blog-owner's theme-selection, and reset it the plugin's?

And, it turns out, the bundled theme isn't even necessary for the plugin to work right. So why create this issue?

I also quickly fired up phpMyAdmin and took a look in the database, and was surprised to find nothing that seemed to belong to UserPress. (Tho, admittedly, my database is a hairball...) So the plugin does not create any new tables to support the wiki functionality? That's another intriguing surprise.

I tried to find a citation, without success, for a recent communique from WP HQ, clarifying that themes should not bundle plugins. There are reasons why developers want to do this, and unfortunately there are reasons why it can lead to exposure/exploit.

UserPress installs a theme of its own, and while the novelty might mean there is no rule about it, that the theme then wants the plugin bbPress, and loads it into the directory (and is expecting BuddyPress, too), is at best skirting the bundling-rule.

From a developer's point of view, there are advantages & attractions to bundling up everything that would seem to be nice. From where the end-user stands, and in the WP head office, these choices can cause confusion and consternation.

Fortunately for your product, as you say, andas I deliberately tested & tried, it appears that the bundling choices are not essential to the proper functioning of the proposed Wiki. The bundling is just a 'developer convenience', evidently, and the product can be repackaged in a different manner.

I still have UserPress installed on my development site, and look forward to watching it evolve.