Not having a full compliment of spells for a player who wants to play as a spell casting class is kind of lame and would dissuade me from wanting to play as a caster because in my experience magic users for the first 5-6 levels are basically useless.
If that is indeed the case, it sounds like a slight flaw in the game, and one that could conceivably be remedied by Larian. I understand and agree with the idea that spell-casters should be weaker early on and stronger later; maybe it just doesn't need to be so pronounced.
