This rule-set would actively prohibit the development of GOIs, POIs and Bases. If you are one author that has an idea, would you still write it if you first needed someone else to approve it? [There is supposed to be a followup sentence here, but i am currently incapable of finding the right words]
I think the line is drawn at the wrong spot. Instead of saying, these requirements must be meet for it to exist in-universe, the line should be applied in-universe. Some Cells are just to small to be acknowledged by an organization as large as the current "main-stream" version of the CI. These POIs, GOIs and Sites/Bases exist in-universe once there ONE article/item sticks, but the "Large main-stream Cell" dose not need to play close attention to them at the moment.
In a largely decentralized organization it is entirely reasonable that many "Base One"s exist out there, but the Insurgency knows only a handful of them and has given them there own number, a number the cell which uses this site as its "Base One" is not even aware of.
Coupling "It exists in-universe" to "more than one author needs to write it" is plausible, when the community is large enough to support it. Otherwise it turns into a trade-off fest, with 2 authors writing stuff they don't like because they need a partner to execute the idea they care about.
"Self-Inserts" are not to be seen as bad. There are many successful articles on this wiki detailing the adventures of characters that share there name with there author. Also, just to be open about it, it is kind of my stick, so i am definitely biased here.
I like the way it currently is. Cad called it a "Blob" where everything and nothing is true and i am ok with that.