“I am not advocating that there should be women Rabbis.”
If you advocate smicha (Rabbinic Ordination) for women then by definition you advocate women rabbis. (Not you specifically, but someone advocating such.) Rabbinic ordination = rabbi.
What’s wrong with a yoetzet to fit the bill of what you’re describing about being certified to answer halachic questions? You also didn’t address my above point that a heter hora’ah is considered a license to be a dayan. ??? ????? ????