If I had to guess i would say it depends on the department.
If you wanna learn about what riots doing, keep an eye on Dev corner not gameplay.
Recommend ya do a Quick Rioter Rundown to be able to sort relevant information rapidly. Hope you find that usefull.
Examples of what you might see.
"Next Week
Amongst other things planning to talk about a couple of other requested topics from this week:
Marksmen play patterns and thoughts on what's healthy/unhealthy
Mastery curves and how we think about them when designing and balancing"
"In terms of how we should have done better here, yeah, in retrospect we should have hit Zoe harder like this in 8.1 or 8.2, rather than putting her players through a steady trickle of nerfs while her opponents still had to deal with some inappropriate strengths. That's something we need to get better at and I think the best response there is to demonstrate by handling future releases, whether VGUs or new champs, better."
-meddler.