VC Bans? I'm in favour of them.
However, sometimes on Discords/OOC people who are off need to head on for a rp reason, or maybe they're involved in something/stuff they WOULD know about IC but don't as they're busy doing something else, eg a game or taking a bit of a break. Communication between everyone in IC tends to be quite difficult, due to timezones/irl stuff simply occurring which makes it annoyingly difficult.
The 'oh just add a note' thing isn't really a good method, as it might easily just be destroyed by someone taking the mick, disappear due to unforeseen circumstances, etc etc etc. Not only that, sometimes you move base, or the 'main rp location' moves to somewhere else, radio frequencies changed and you don't know it has, so you just assume everyone's afk or in an event you're not invited to.
Sometimes more 'ooc things' need to be allowed if only for keeping people 'in the know'/not believe the server's an empty deathhole. Without the forums, I doubt most people would still be on neb, the roleplay documents section provides useful information etc.
I know that I've been on the server, today, for example, spending some time wandering aimlessly with some others, trying to find where everyone else went, thinking the frequency had changed (It hadn't??? it was a psy-op i think). Eventually, someone logged onto the server and spoke on the radio and we spoke. While discord wasn't involved, I was on the verge of leaving and heading back on the day after, as I was tired lol/too many memories of wandering around aimlessly, in search of people on city hl2rp.
(First time it's happened so far, don't blame anyone for the wandering thing, but more of something 'that happened' if that makes sense.)
Maybe a good 'inbetween' is to require some staff to be in discords that are used to transfer any information that is IC, otherwise it's classified as Metagame and bannable.
random 1am rambles