I'd buy Aeria Games and Barunson.
- Change management, goal and visions so Last Chaos will get a big brother of the utmost quality,
- Fire all lazy developers,
- Pay English lessons for all developers,
- Change management, goal and visions so Aeria will prioritize cosmetic AP items over powerful items and some other policies that will get changed for the better,
- Try to staff all games with enough GMs so different GM teams don't need to 'merge',
- Ban people left and right.