25 provinces/player, with water provinces equal to:
(water players * 0.75) / (land players + water players * 0.75)
Can we do that? Obviously that's approximate

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Yes, death 3, misfortune 3, productivity 3, magic 3 would be a valid combo. In fact, I think that'd probably be a more servere penalty than what I suggested for LA Marignon...... although giving a heavy infantry position prod-3 seems so generous. Hmm....