I am keeping mine from here on out for Untamed that I can to get a better shot at the rest of the air dropped summoners. There could be some back end demand on these packs like they had last time, except possibly even much more fomo. Anything can happen but keeping the packs and stocking up potions right now seems to be the right call for me.
RE: Untamed Packs in Rewards - Better to save or better to open?