(June 21st, 2014, 13:37)WilliamLP Wrote: Productive at 35% still lets plains hills be (essentially) 7 food-hammer tiles when building workers or work boats. Since these tend to be very readily available this still feels like a pretty massive advantage over those who don't have it, particularly in a trait with a very large potential effect on the late game.
A 25% bonus was my original suggestion, though Seven talked me up to 35%. Or you could have a different percentage for Workers and Work Boats (a higher percentage is definitely more powerful for Workers). But I think having plains-hill mines being 6-7 hammers for Workers and Work Boats really isn't that big of an issue, given how maps are balanced here. How many games have you played where you had more than one plains-hill at your capital? Sometimes they don't even crop up except under your Settler. It's still almost always better to settle on a plains-hill than to settle to the side in the hope of mining it later. And plains-hills are self balancing due to the food cost to work them - unless you only work them while producing Workers/Work Boats/Settlers, in which case there's still a cost of additional worker turns to make extra improvements for citizens to switch between.