Three different 4X strategy games, three different solutions to "that inherent problem" of disappearing exploration

There is an issue in 4X games. In fact, it's so persistent, that Amplitude Studios' co-founder and CEO Romain de Waubert de Genlis describes it as an "inherent problem", one his team have been attempting to solve since the first Endless Legend released back in 2014. "One of the X's, 'explore', disappears after a…