I see another redundant law, actually made moot by societal and legal changes, being promulgated and opening a door to a whole new panoply of injunctions and law suits. The Law of Unintended Consequences is going to get a real workout.

Idaho, Kentucky, Nebraska and Tennessee rescinded their ratification. South Dakota put a sunset on their ratification so that it expired in 1979. Since the supreme court ducked the question of whether congress could extend (as opposed to starting over) the ratification process and if a state could rescind ratification, its unclear if those recensions could count.

I would think that supporters of the ERA would learn a lesson from the gay marriage advocates. If the got three more states they would only invoke a legal wrangle. If the courts then forced the issue, they would in turn cause a back lash that would potentially hurt their cause more than the legal ruling could help.

If the supporters think it is a good idea, start the process over. They should find no more receptive congress than the current one to get an amendment started. Do the political spade work to convince people that it is a good idea and that unintended consequences will not make things worse. In short, if you really believe this is best, work through the process, don't try to finagle a result.