New update:

Increased the forest density ffrom 0.6 to 5%. Existing saves will still work with the old value.

Note:
You can also adjust this value yourself:
Go to my mod folder (SteamID) → /Data/Models/MyTypes.json, open it with any editor, and search for "id": "ForestMixed". It’s part of "id": "ForestMixedStep" under "props". Just change the "terrainPercent" to whatever value you like!

Release