There is a downside to taking on Kaguya, as at that point we'd be very loaded down with foreign influences especially from japan. This would be incredibly easy to bludgeon us with politically, also unlike all the other ones she's not actually swearing fealty to us.
On the other hand she is very talented (Plus her friendship with Tianzi) and maybe this could open up some longshot coup methods? Off the ruling Imperial family and put her in charge while increasing the institutions power?
On the other hand she is very talented (Plus her friendship with Tianzi) and maybe this could open up some longshot coup methods? Off the ruling Imperial family and put her in charge while increasing the institutions power?