Imagine if the Project X Zone game were released on mobile

massive success of Super Robot Wars DD on mobile especially on iOS and Android has got me thinking, wondering, and imagining: if Project X Zone were to be released on mobile, would players stay actively online, or could it be released as an offline game depending on the developers? As for character updates whether for pair units or solo units would they be available with every event? Would the game use a gacha system (especially for obtaining characters, items, or story DLC)?