One thing I hope Larian does not extract from Baldur's Gate is the behavior ("behaviour" for those of you in the UK) of the liches ...
"I am an immortal lich, possessed of mighty magics! How dare you intrude upon my cozy sepulchre located in downtown Athkatla! You shall lament your mistake as I first freeze time, for then shall I summon a Pit Fiend, and then lo, I shall destroy the Fiend while you watch in awe and despair! Ha! Your magics and weapons are useless against my contingencies, and now I shall rain acid and fire upon you ... uh, where have you gone? ... ouch! Agh, I've been poked by a cheap short sword, .... hissss, aagh!"
Does Dispel Magic remove a Protection from Undead effect?
This behavior was brilliant, though. And who can forget our friend Kangaxx and how he reacted to being subjected to a Protection from Magic scroll.
But generally all the spellcasters had some very exploitable responses to combat. They never really conserved their spells or used appropriate attacks, so letting them slowly deal with summons would get the worst damage out of the way. I seem to remember also simply getting my rogue into visual distance and then way out again (with boots of speed) to make them aggro and cast their time stop without actually having any targets to drop their nukes on. This was also, I think, the typical strategy for the Gate section lich that was guarding Daystar.
But in the more general sense, I agree that boosting enemies to be walking nightmares (or floating, in case of beholders) that are next to impossible to handle through conventional means and then throwing in some ridiculous weakness that can totally trivialize those encounters is not something that need be extracted from past games.
