I'm not sure if this is technically possible, but I was inspired by the favorable saga stone edits.
Having almost died several times on new character getting into combat around something as mundane as trees, recommend making a small part of them interactive instead of the whole thing. Ideally this would entail something manageable around their base, to alleviate their current status as towering graveyards of clicks...and occasional status as towering graveyards of characters who could not target the monsters under them.
Not sure if there are any other resources or module locations that need this treatment if it is possible, but definitely the treees!