I had something akin to her Koumajou outfit in mind really. Plus, a couple folks seem to like this idea too, since the main thing is that it has to be tasteful. Which is what I've been going for to begin with. Basically, tasteful, modest, but overall more eye-catching than her usual. It's like a business suit in comparison to a shirt and slacks.
Besides, from what I understand, the creepy bit was in reference to the Youmu part. Which you'll notice I've pretty much dropped.
And I also don't see why it can be said that there's a dearth of activity, seems just as alive as any past Z-Machine.
EDIT: I think there's the possibility that some folks might also not have any further ideas for certain times, so they wait until someone else proceeds, which then inspires them. I've done that myself several times really. Like with the tides, there's an ebb and a flow.
Basically, if you can't think of anything off the bat, you wait for someone to provide a springboard idea to work off of. There wouldn't really be any worry about stepping on toes if people are open about their plans. Which you'll notice I've been making relatively obvious, if not outright explaining it as I have been of recent.
After all, when someone referees something like a Sumo match, they wear a special outfit. This is basically my own take on that.
EDIT 2: And on the Mahjong thing, it seems folks genuinely like the idea, when it was just a possibility suggestion on my part. I've said this in the past, but folks just decided to run with it.