I've updated the mod, changing the dependency from Balance Multi to Void Multi, in order to fix crucial elements, such as the lurker's ability to attack. (for me, Balance Multi causes Lurkers to be unable to attack)
Since I didn't want my mod to be the cause of breaking other people's maps, I've updated the mod and the download link. All other updates will be done passively, without notification.
Hey I tested this a week or so ago and forgot to post. Didn't get into it too extensively but it seemed to work pretty well, the creep spread was smart and well spread out. I like the fact it checks different ranges and tries to select an optimised spot for spread, didn't seem to cluster tumours when it had an option. Only criticism I would have is if multiple tumours spread at once they can select a target point very near each other due to the spell of the first being in progress and there being no actual tumour in position when the next do their searches.