Will made himself extremely depressed attempting to force out more writing for this game and realised he had to stop for the sake of his own health. He needed a clean break and that's why he's not here to address any of this. It's not much more complicated than that.
Attempting to assign blame or pressure senior members of staff to accept rejected or half-complete projects won't magically make him come back and revive them. There isn't one weird trick that will get the thing you've been waiting for to appear. It's not coming. I'm genuinely sorry. For the record I reviewed that Sophora expansion at Will's request and I told him myself that Fen was right, it needed a lot of revisions to be acceptable. It read like it belonged to a different, worse game. Probably because it was written by someone who was depressed and didn't want to do this anymore.
Sometimes the well runs dry. There's no shame in it, it's text smut for goodness sake. I don't expect the fallout from this to stop just because I said it should, but I'll say it anyway. Will completed a wide range of content that is well loved, as well as personally commissioning loads of art for it, and that should be his legacy, not a handful of might-have-been ghosts. Because you know what lies behind them? More might-have-been ghosts. People always want more, and at some point you have to say no.