1/ You’ve got that covered. Excellent.
2/ --opinion-- Wikipedia has become a site toxic to anyone with a non "progressive" or "liberal" viewpoint. Infogalactic was founded as a fork of Wikipedia where they would leave out the politics and politically correct views which is damaging the quality of some of the wikipedia content. --/opinion--
While it has not yet gotten the popularity of Wikipedia, it’s rapidly growing.
Anyway, if you’re updating wikipedia, that should be good enough for now, so that’s not really an issue.
Oh, suggestion: use the SVG version of your logo rather than the low resolution PNG. It’s much nicer (I see someone has already done that for Infogalactic)
3/ re: improved features - I am not sure which features made me come back and reevaluate xwiki. App Within Minutes, and the custom databases you could do? Maybe, I don't remember exactly now. And funnily enough, in the end I didn't develop the database type app - just stuck with a quick "app within minutes" type app for some of the larger listings I had to deal with.
The usability of the wiki within the first couple of minutes is almost instantly obvious to me. I had no issues with that. (one minor annoyance which I will detail in a later post - which is not necessarily an xwiki problem as it is with my expectations)
3a/ Installation - I forget all the little things I had to do, and the number of attempts I needed until I was happy with my initial installation. I'll redo an installation somewhere else and then see if any of those annoyances/problems are actually an issue or not. By now, I've forgotten what I did to install it, so it should be just doing it from scratch again.
Ages past, when installing software under Unix/Linux, I’d have to do the whole compile everything from source after first making sure that I had all the necessary libraries and prerequisites. These days, I’m completely spoiled with the {yum|apt} install commands and I have to confess to getting mentally lazy.
So in the spirit of that laziness, the install should be as easy as one of those package installation commands for one of the supported platforms. I suspect that will take a good deal of work, so the other possibility is preparing a self contained, prebuilt XWiki appliance that some one interested in evaluating the software can just download, and run under their hypervisor of choice.
Depending on how you build it, you may be able to have just one version that can be imported to run under KVM/ESXi or VirtualBox.
You could even keep a current version, and a previous version. The previous version could be used by someone to test the upgrade process.
4/ wonderful - you're aware of all that.
Please note that my installation memories my be incorrect, or I may have been just doing something silly. When I do a new install, I’ll actually pay attention and write down anything that actually is a real difficulty.