I think you are putting the cart before the horse here. Wicca has been a recognized religion for some time. There are even Wiccan chaplains in the armed forces. All that the ACLU is asking for here is that what's sauce for the goose be sauce for the gander.
Santarians asking for an animal sacrifice before the meeting would be treated the same.
It is a loony fring and the fact the communist founded ACLU is involved speaks volumes to the LACK of legitimacy.
This is not a case of equals but a matter of using an absurd notion, "wicca" is a legitimate religion.
It was clearly and convincingly created as a fraud in the 50 and it remains so today. As for your referance to army chaplains, that is laughable since the politicians have been pushing the army as social experiment now for some time. (see don't ask don't tell)
It should be treated the same way as the surf and turn religion and the santaria religion. No invite.