John Whelan wrote on Wed, Dec 9, 2015 07:32 PM UTC:
I'm no expert on this. My understanding is that what one should look for
are a huge variety of possible legal moves per turn, and natural and easily
visualized strategies, gradually developed over multiple turns. It might
help to have a large board, many pieces with geographically localized
powers (that cannot cross the board in a single swoop), and multiple moves per turn with separate pieces.