It was funny, i somehow just could not stop...:D
Well, giving familiars unlimited range is nice but serves no real purpose. You can uncover almost the whole map, see where NPCs are and so on but for this kind of exploring, 100 m/ft would be more than enough.
Having them trigger waypoints and even story events can only be an oversight. I kept the savefile and will go on using it too see if something else broke. I think apart from the grove, nothing started. Maybe some points registered as "visited" and will change other outcomes.
The fact that you get thrown out of the myconid colony if you teleport in before getting aknowledged by the sovereign is pretty funny.
Having familiars transfer touch spells would be nice indeed.
Another thing worth mentioning is that i got to level 3 by getting XP for exploring while still standing on the beach
(And to reach the underdark i went to the blighted village, destroyed the webbing and jumped my way to the spider matriarchs place, from there you can just hop into the hole. Ravens get no falling damage.)
Would be even easier with an invisible Imp. I think those can even manipulate objects or not?