As estate coverage is no more, region almost never falls into trouble
This is by design. We don't want region maintenance to be the focus of a player's game experience.
Also, the estate coverage system was one of the things the players disliked most. Almost no one ever liked it. And many of the players that claimed they did like it were basing their opinions on a complete misunderstanding of how the system actually worked.
I am probably among the last ones who would like too much micromanagement, but I feel "focus of game experience" has become straightforward, mono-dimensional "recruit troop as large as possible, go to region A as quickly as possible, and be ready to strictly follow attack order"
courtiership game is removed, trade game is removed, religion game is completely castrated. things have become narrow and simple. did that improve gaming experience?
every realm had players who have just time to do courtier work, and as long as courtier work was needed, they were part of game, dimension of game. statistics means very little here, let's say 5% of the realm were courtiers, and that was completely sufficient to cover realm needs, while giving gaming diversity. the same applies for traders, even very few traders could bring lot of benefit to the realm, and there were always enough people to be traders as long as it was giving sensible outcome. that is were statistical polls will not give right answers.
how gaming experience is improved if nobles only recruit troops and travel while most of other things is resolved automatically or very easily? i personally feel it as a degradation of game, but i understand that i possibly don't fit into statistics...