No, I would not bring her back.

Aerith is my favorite character because of what she did for the planet and what happened to her as a result like WK said, her limits and her high magical power made her the perfect mage type (though I find many people don't bother to use her cause she is "weak") I feel in no short time this will become another "Lets bash Aerith thread" I know I shouldn't say this but I feel many people didn't like her for her weak strength in battle and then just latched onto other people's reasons as to why they do not like her.

Just my thoughts and I am not going to change them no matter what anyone says.