Global eny is very rarely actually correlated to the odds of one localized fight, especially on a 3 country map.
yes i know, thats why i said im speaking from a MW point of view. I hardly go into LW so im not sure how the dynamic of the new white flag is working in there. But lets look at it this way. Lets say the Bish have 10 players on, the Nits have 10 players on and the rooks have 0. Bish or Nits should have to take the rook town down 100% to get a capture while possibly leaving the 50% set up for taking each others bases. This may discourage the "base rape" of undefended bases if they actually had to work for them.
