Who cares about enigma? I personally don't use it as a standard of anything. And I think that sorcs are stronger for not needing enigma, because it means they are much less dependant on a certain item to be powerful.
Also, sorcs are hardly weak. I would take a fully decked out Infinity Light sorc over a hammerdin any day of ever. The only area where sorcs are lacking is the ubers, and personally I could care less. I think sorcs are the most versatile class, and they've always been my favorite.
Oh and also, there are sorcs who wear enigma. It was the main reason ppl started making enigma in breast plates.