I won't be in a position to do another queries post until some time after nominations have closed, but I did want to flag up that on working through some more approvals just now I have spotted a few fandoms which have actual A/B-type relationship tags instead of worldbuilding tags in the "Relationship" field. In worldbuildingex, we (ab)use this field to allow fandom-specific worldbuilding tags, which should be prefixed "WB:". So far, I've seen
Nuclear Throne (Video Game) and
Sen no Kiseki | The Legend of Heroes: Trails of Cold Steel Series (Video Games), but I suspect there are others (AO3 only shows me a random selection of nominations each time I refresh).
I should add that I can also see a fairly large number of fandoms which are missing their "Any or No Characters" and "Original Character(s)" tags; they will not be approved without them.
The vast majority of participants have been formatting their nominations in line with the requirements (which I freely admit are extremely picky!); however, I did want to give those who have not managed to do so a chance to check them before nominations close in ~14.5 hours. In case it's helpful to anyone,
this is a step-by-step guide with screenshots to how nominations work in this exchange.