But this led to the second issue; terrible balancing. Every ... single ... time .... in AD&D that something awesome was given, it was usually balanced in a terrible and stupid way. We see this in the original rules (Paladins can't adventure in mixed parties, strictures on gold and magic items and so on) and we keep seeing it as the game progressed (wanna be a cool drow? great, don't go in the sun; wanna be a cool barbarian? great, don't hang out with them spellcasters).
Speaking from my own, anecdotal and observed experience ... when you try to "balance" awesome features with drawbacks that are nearly unplayable, the drawbacks get removed or forgotten or otherwise ignored, which means they aren't really drawbacks, and therefore don't balance.