Not everyone had the same tastes, so it's hard to say to be honest.
This post
>>44700379 has a good general idea of adapting to different audiences, but is far more complex than just this, people that like to watch moba are different from the ones that like to watch fps, for example.
In the end of the day, it depends on how you develop your fanbase, if Kaela suddenly streamed healthy two hours per day, 5 days per week, her fans would probably find it weird.
The answer for this question will vary, I believe the general rule is only applicable if they are in the beginning of the career, but would also change depending on what the person in question wants to do.
For Karaoke/music focused people, 3-4 times per week is good, 1-2 hours per stream max.
Game focused, 5 times per week, 1-3 hours per stream depending on the game.
Zatsus, 7 days per week... 2 hours max?
Most holos are a mix of everything and have personal tastes/fanbase development involved, so it's truly hard to say.
