Furthermore, Idol Wars will remain in the hands of the original developers, meaning that the Japanese development team will directly deliver the events and content updates.
Considering Idol Wars is using the same formula and that it isn't all that f2p friendly, has some weird gacha rates and the deals haven't been that hot lately.

Also it brings in some problems. For example, I paid $10 for a 4x progress gacha, got a 2x one instead (would have paid the $5 one for that) for no reason at all - it was saying quadruple in bold letters when I used it - tried to deal with their support who has broken english and never got any compensation for it. So I think it is better to stay a bit cautious about it.