The bad things become bigger in the complete game, I suggest waiting until it gets a bit cheaper, at the moment you're paying a bit too much compared to what you get, but wait until the price drops a bit and then buy it, I forgot one pro though, one pro which neither Baldur's Gate, Wizards and Warriors, Icewind Dale, Baldur's Gate 2 or many other RPG games have, if you have the patience and the skill you can make a completely new scenario/campaign/main quest all by yourself, as well as creating new NPCs, doing this you can cure the problems that plague the main quest, but not the imbalance of Magic and Technology, Magic has a spell which kills 98% of all enemies with one shot, it can also clear away all doors in the game, removing the need for keys and lockpicks, the damage it does is about 30000, killing any thing which fails it's saving throw(Which almost all things do), the best technological weapon which I've found so far does 40-60 damage and can miss, no magical spells ever miss or fail.
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Worshipper of Tiax.
Wielder of the ancient Lawyer spells.
Member of the HADB clan.
Ally of the Fluffy Queen and the Dreaded Red Fluffy