This can be possible :
for me would be better to implement gacha into a skill game machine as I said before....you go in the event or region and you will sit,play and instead to win money you will win itams , the bonus will be the rare and the Jackpot all the set, all the item will be transfert like this can be traded or resold....everybody happy and is legal as in this way gacha (obviously must to be called in other way) will be skill game ....i sayd zyngo but can be also no devil or wathever