Regarding the Wild ids: ideally, people will play KuWild for this one. The easiest sell inrp is that you're a KOI agent, simple.
However, multiple players have developed characters with non-KuWild ids that can ostensibly join the fight. So those ids are also part of the config, as is the id of the official Wild faction, who may decide to use the event to develop some kind of rp. These ids are less likely to be flying standard KOI tech, which will make them vulnerable to interrogation or investigation, if people decide to go in that direction inrp.
Any new player just trying stuff out for the event will most likely use the KuWild id, seeing as their restart lands you right on Aonyobo Annex. And anyone who is not new can handle the additional rp demands.