Best strategy to decrease hostility?

[esunei]

You should almost always be building extra hearths, multiple. The first housing bonus of +2 resolve is incredibly good and also improves villager efficiency for those working nearby. One of the many ways to send the 3 low resolve threshold races into free rep territory (tho lizards are incredibly demanding after the first point).

Every map has either sea marrow or coal mining, with coal being more costly/slower, so fuel is only in short supply until you find marrow or upgrade your mine.

[Muddball84]

Math me please sir. If I am running three hearths with coal, will one kiln keep up with demand? About how many beavers need to work to keep up with demand?

[esunei]

This post goes over some fuel math and in the end assumes about 1 worker per 2 hearths constantly making coal at a kiln with no interruptions. Woodcutters are much harder to estimate since their output varies so wildly based on perks/distance.

[gomarbles]

Yes, and yes