I prefer letting mobs have the ability to move through foliage as it lets me know where they are and prevents things from sneaking up on me, However, certain creatures (such as stymphalian birds from ice and fire or Outer end's spectraflies) are programmed to sit on foliage, and therefore tend to break a little with this mod installed. I would prefer not to have to turn mob effects off, so if you could add a blacklist/whitelist config for mobs who can or cannot pass through foliage, It would be very helpful.