I'm really surprised to see you consider this as 'stacking'. It's rebalancing the papal electors so they better represent the global Church. What's wrong with that? Are you just annoyed the US church is now less dominant than it was?

The Cardinals, meeting in front of the Last Judgement wall, will follow their consciences. If those consciences lead them to favour the needs of the Christians of the Global South over those of the Global North, are you so sure that wouldn't be the action of the Holy Spirit?