I think streams like this are best as a casual as-and-when thing rather than a formal obligation. I think it's the spontaneous interest that makes them gold.She's really got something going with these interviews and it's a shame she's not making this a series. Talk to Sakana, she could even make some kind of "Pipparound the World" merch. Get some assets going or something, make big money! It would be something no other Vtuber has and something only she can do, really, because of the genuine innocent curiosity and lack of filter.
It would then speak for itself, of course.