Perhaps instead of splitting by corpo affiliation, threads based on the nature of the things being discussed would make more sense?
Thread 1:
For sanitized, official, idol culture related things, such as new outfits or model upgrades, upcoming debuts, merch, song covers, official concerts and events, upcoming stream schedules, official announcements, notable brand or talent collabs, and other hype for upcoming events etc. (Yagoo's dreamland)
Thread 2:
For spontaneous events, such as eventful moments during streams (be it good, such as funny moments, speedrun achievements, someone notable showing up in chat etc; or bad, such as yabs or breakdowns); or sideshows such as Twitter bickering, behind the scene discussions (agency, licensing issues, financials), leaks, rrats etc. (Where Yagoo's dreams go to die)