Yeah, they cocked up Guinan's mystique by making El-Aurans simple humanoids when using Soren as a villain. While Adromeda was often quite weak, they did quite a good job of drip-feeding clues that Trance Gemini was a lot more than she appeared. Her origin spiralled into ludicrousness later on but an actual plot arc about Guinan and her people's abilities would have been preferable - maybe like Gandalf - a hugely powerful creature instructed to observe who uses a tiny fraction of his power to guide the lesser races.