I see now that Virginia was set up as Unknown County, Virginia but I could swear it was originally Virginia, Unknown County when I started placing profiles there. I also see that there is an update to not put profiles in this category. It is waiting on Bot. So it seems that I will have work on those Virginia profiles too.
So I think whatever is decided about a state category being used where the place or county is not known, I can help to correct my profiles to whatever is decided.
However, I think it would be wise to NOT have other Wikitree folks just remove the high level state categories without some notice and without a plan in place as to where to move them.
I have received requests in the past to adjust profiles because the category was high level and I have. However, where there is not notice it leads to Wikitrees creating new categories that cause new work (ahem... me in this case )
I like the idea of creating a category State_Unknown Place in the appropriate State - and then adding that category to the State as well as to the appropriate State Maintenance category. If it is just listed under Maintenance or if there is no guidance on the State profile, profile manager could not easily find it or know of its existence.